* configure.tgt (gdb_osabi, build_gdbserver): Comment variables.

	* configure.tgt (gdb_osabi, build_gdbserver): Comment variables.
	(arm*-*-*): Do not set obsolete build_rdi_share variable.

	(*-*-freebsd* | *-*-kfreebsd*-gnu): Remove generic case, replace by ...
	(alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu)
	(i[34567]86-*-freebsd* | i[34567]86-*-kfreebsd*-gnu)
	(sparc*-*-freebsd* | sparc*-*-kfreebsd*-gnu): ... specific cases.
	(x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu): Re-sort.

	(xscale-*-*): Merge into arm*-*-* case.
	(fido-*-elf*): Merge into m68*-*-elf* case.
	(m68*-*-aout*, m68*-*-coff*, m68*-*-elf*, m68*-*-rtems*,
	m68*-*-uclinux*): Merge cases.
	(powerpc-*-linux*, powerpc64-*-linux*): Merge cases.
	(sh-*-coff*, sh-*-elf*): Merge into sh* case.