- update trunk/GcodeSenderGUIthreads.pro
Save jog step size

Save the user-selected step size
add various files to .gitignore

Add these to .gitignore:
	GrblController
	*.o
	moc_*.cpp
	qrc_*.cpp
	*.stash
	GrblController-local.iss
Add spindle state icon

- add icon showing spindle state
- add tooltips for the state icons
- hunting for the slow sending of commands (esp. when jogging), added
and tweaked some diagnostic output
- refactored the grbl state parser and simplified the incorrect
measurements logic
- cosmetic formatting fixes
- added coolant icon
Fix a swathe of compiler warnings

Fixes a mixture of mostly harmless warnings in the QextSerialPort and
log4qt libraries.
Minor fixes that clang warns about

Clang complains about different things to gcc; MacOS defaults to
clang.
Trim strings in waitForOk

Trim some diagnostic strings to prevent stray \r's in the log
Tweak the icon colors

Make the 'on' color a bit more pronounced and move it into definitions.h