* 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
