[PATCH] Delete GCJ

[Bernd Edlinger]

> Things we may want to remove:
> 
> - references to java in contrib (download_ecj, gcc_update,
>   patch_tester.sh, update-copyright.py)
> - GCJ, GCJ_FOR_BUILD, GCJ_FOR_TARGET in Makefiles.tpl and configure.ac
> - LIBGCJ_SONAME in config/i386/{cygwin.h,mingw32.h}
> - references to java in install.texi

Probably also gcc/jit/* and gcc/testsuite/jit.dg/* ?

Bernd.