C6X port 10/11: The port

[Bernd Schmidt <bernds at codesourcery dot com>]

This adds config/c6x and various bits and pieces elsewhere to enable it.
This didn't make it on the first attempt to due size limits, hence gzipped.

	* doc/invoke.texi (C6X Options): New section.
	* doc/md.texi (TI C6X family): New section.
	* config.gcc: Handle tic6x, in particular tic6x-*-elf and
	tic6x-*-uclinux.
	config/c6x/uclinux-elf.h: New file.
	config/c6x/predicates.md: New file.
	config/c6x/unwind-c6x.c: New file.
	config/c6x/t-opts: New file.
	config/c6x/t-c6x-uclinux: New file.
	config/c6x/c6x-sched.md.in: New file.
	config/c6x/unwind-c6x.h: New file.
	config/c6x/c6x-isas.def: New file.
	config/c6x/elf.h: New file.
	config/c6x/gtd.c: New file.
	config/c6x/c6x.md: New file.
	config/c6x/gtf.c: New file.
	config/c6x/t-c6x: New file.
	config/c6x/c6x.opt: New file.
	config/c6x/ltd.c: New file.
	config/c6x/lib1funcs.asm: New file.
	config/c6x/t-c6x-elf: New file.
	config/c6x/ltf.c: New file.
	config/c6x/c6x-opts.h: New file.
	config/c6x/c6x-protos.h: New file.
	config/c6x/sync.md: New file.
	config/c6x/c6x-mult.md: New file.
	config/c6x/sfp-machine.h: New file.
	config/c6x/ged.c: New file.
	config/c6x/c6x.c: New file.
	config/c6x/gef.c: New file.
	config/c6x/c6x-sched.md: New file.
	config/c6x/c6x-mult.md.in: New file.
	config/c6x/genmult.sh: New file.
	config/c6x/led.c: New file.
	config/c6x/c6x.h: New file.
	config/c6x/lef.c: New file.
	config/c6x/gensched.sh: New file.
	config/c6x/eqd.c: New file.
	config/c6x/libunwind.S: New file.
	config/c6x/eqf.c: New file.
	config/c6x/t-c6x-softfp: New file.
	config/c6x/crti.s: New file.
	config/c6x/c6x-modes.def: New file.
	config/c6x/genopt.sh: New file.
	config/c6x/constraints.md: New file.
	config/c6x/crtn.s: New file.
	config/c6x/c6x-tables.opt: New file.
	config/c6x/pr-support.c: New file.

Bernd

Attachment: c6xport.diff.gz
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Attachment: c6x-libgcc.diff
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