invoke.texi (fconserve-space): Remove documentation.

invoke.texi (fconserve-space): Remove documentation.

gcc/
	* doc/invoke.texi (fconserve-space): Remove documentation.

c-family/
	* c.opt (fconserve-space): Turn into a no-op.

cp/
	* decl.c: Do not include output.h.
	(start_decl): Remove code for flag_conserve_space.

testsuite/
	* g++.old-deja/g++.brendan/array1.C: Remove dg-options.

From-SVN: r188282