Remove all remaining evidence of M109.

M109 went away a few commits ago in favour of only M116.

config.default.h

@@ -243,10 +243,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS				5
-/**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.gen3.h

@@ -250,9 +250,9 @@
 #define	TEMP_HYSTERESIS				5
 
 /**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
-
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.gen6.h

@@ -243,10 +243,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS				5
-/**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.gen7-v1.1-v1.3.h

@@ -251,10 +251,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS			20
-/**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.gen7-v1.4.h

@@ -251,10 +251,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS			20
-/**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.ramps-v1.2.h

@@ -246,10 +246,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS				5
-/**
-TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.ramps-v1.3.h

@@ -250,10 +250,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS				5
-/**
-TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.sanguinololu-v1.1.h

@@ -247,10 +247,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS				5
-/**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.sanguinololu-v1.2.h

@@ -247,10 +247,11 @@
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS				5
-/**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

config.teensy.h

@@ -335,10 +335,11 @@ New plan:
 	Unit is degree Celsius.
 */
 #define	TEMP_HYSTERESIS				5
-/**
-	TEMP_RESIDENCY_TIME: actual temperature must be close to target for this long before target is achieved
 
-	temperature is "achieved" for purposes of M109 and friends when actual temperature is within [hysteresis] of target for [residency] seconds
+/**
+	TEMP_RESIDENCY_TIME: actual temperature must be close to target (within
+	set temperature +- TEMP_HYSTERESIS) for this long before target is achieved
+	(and a M116 succeeds). Unit is seconds.
 */
 #define	TEMP_RESIDENCY_TIME		60
 

gcode_process.c

@@ -467,7 +467,7 @@ void process_gcode_command() {
 				//?
 				//? Example: M104 S190
 				//?
-				//? Set the temperature of the current extruder to 190<sup>o</sup>C and return control to the host immediately (''i.e.'' before that temperature has been reached by the extruder).  See also M109.
+				//? Set the temperature of the current extruder to 190<sup>o</sup>C and return control to the host immediately (''i.e.'' before that temperature has been reached by the extruder).  See also M116.
 				//? Teacup supports an optional P parameter as a sensor index to address (eg M104 P1 S100 will set the bed temperature rather than the extruder temperature).
 				//?
 				if ( ! next_target.seen_S)

temp.c

@@ -306,7 +306,7 @@ void temp_sensor_tick() {
 }
 
 /// report whether all temp sensors are reading their target temperatures
-/// used for M109 and friends
+/// used for M116 and friends
 uint8_t	temp_achieved() {
 	temp_sensor_t i;
 	uint8_t all_ok = 255;