* dbxout.c, mips-tfile.c, config/mips/mips.c, xcoffout.c:
	Always include gstab.h, not system stab.h.  Don't provide
	default definitions of N_CATCH or N_OPT.  Always use the
	gstab.h variant of STAB_CODE_TYPE.
	* final.c: Don't include stab.h/gstab.h at all, or provide
	defaults for N_SLINE and N_SOL.

	* xcoffout.c: Can assume N_MAIN, N_DSLINE, N_BSLINE, N_BINCL,
	N_EINCL, N_EXCL, N_M2C, N_SCOPE, N_CATCH, and N_OPT are
	available.
	* sdbout.c: Always include gsyms.h instead of system syms.h.

	* configure.in: No need to check for stab.h.
	* configure, config.in: Regenerate.
	* Makefile.in (final.o): Don't depend on gstab.h.

From-SVN: r41713