Add syscalls and their respective headers. No commits have been made in this fork for a long time, so here are some syscalls which have actually been necessary for compiling my other code for some time.

Conflicts:
	include/fxcg/display.h
	include/fxcg/system.h
Add missing syscall.

Conflicts:
	include/fxcg/serial.h
Add syscalls necessary for transferring files from one calc to another waiting in 3-pin receive mode.

Conflicts:
	include/fxcg/serial.h
Fix include
Fix serial.h again.
Add missing syscall.
Add some syscalls and their headers.

Conflicts:
	include/fxcg/display.h
A syscall turned out to be not what I thought it was...

Conflicts:
	include/fxcg/display.h
New syscalls and respective headers.

Conflicts:
	include/fxcg/system.h
Add new syscalls and their respective headers.

Conflicts:
	include/fxcg/system.h
Add LocalizeMessage1 syscall and respective header.

Conflicts:
	include/fxcg/display.h
Add syscall GetGetkeyToMainFunctionReturnFlag as per Simon's docs.
This name is horrible, even with it describing pretty well what this function does. This needs to change some day.
(also, I'm yet to add the definition to the include directory)
Add missing header.
Add KEY_CTRL_FORMAT to keyboard.h.
Merge pull request #10 from gbl08ma/newsyscalls

Add a variety of new syscalls.