gcc.c: Compile unconditionally all code formerly dependent on #ifdef LANG_SPECIFIC_DR...

gcc.c: Compile unconditionally all code formerly dependent on #ifdef LANG_SPECIFIC_DRIVER.

	* gcc.c: Compile unconditionally all code formerly dependent
	on #ifdef LANG_SPECIFIC_DRIVER.
	* gccspec.c: New file with stub lang_specific_driver,
	lang_specific_pre_link.
	* Makefile.in: Link gccspec.o into xgcc.  Add rule to compile
	gccspec.c.
	* cp/Make-lang.in: Remove all references to g++.o/g++.c.
	Link g++ from gcc.o.
	* f/Make-lang.in: Remove all references to g77.o/g77.c.
	Link g77 from gcc.o.
	* java/Make-lang.in: Remove all references to gcj.o/gcj.c.
	Link gcj from gcc.o.

From-SVN: r25989