* doc/invoke.texi (Option Summary): Add ms1 options.
	* doc/extend.texi: Document interrupt handler attribute for ms1.
	* doc/md.texi: Document ms1 constraints.
	* config.gcc: Add ms1-*-elf.
	* config/ms1/ms1.h: New.
	* config/ms1/ms1.c: New.
	* config/ms1/ms1.md: New.
	* config/ms1/ms1-protos.h: New.
	* config/ms1/ABI.txt: New.
	* config/ms1/crti.asm: New.
	* config/ms1/crtn.asm: New.
	* config/ms1/lib2extra-funcs.c: New.
	* config/ms1/t-ms1: New.
	* config/ms1/ms1.opt: New.

From-SVN: r103342