* defaults.h (MULTIPLE_SYMBOL_SPACES): Provide default.

	* config/arm/pecoff.h, config/i386/beos-elf.h
	* config/i386/cygming.h, config/i386/i386-interix.h:
	Define MULTIPLE_SYMBOL_SPACES to 1, not nothing.  Remove
	comment cloned from manual.
	* doc/tm.texi: Update description of MULTIPLE_SYMBOL_SPACES.
cp:
	* decl2.c (import_export_class)
	* lex.c (handle_pragma_interface):
	Test MULTIPLE_SYMBOL_SPACES with if, not #ifdef.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87243 138bc75d-0d04-0410-961f-82ee72b054a4