import gcc 4.8.1
import gcc 4.8.2
Merge gcc 4.8.2

Conflicts:
	gcc/ChangeLog
	gcc/configure
	gcc/configure.ac
	gcc/gcc/config.gcc
	gcc/gcc/configure
	gcc/gcc/configure.ac
	gcc/libcpp/configure
	gcc/libcpp/configure.ac
	gcc/libgcc/Makefile.in
	gcc/libgcc/config.host
libgcc: Maintain the same visibility as older GCC for now. Needed
because the static library is included in libroot.so.
libgcc: revision 200390 from trunk by Chung-Ju Wu.

* Makefile.in (clean, distclean): Remove auto-target.h and stamp-h
correctly.
ppl: removed.
imported isl-0.12.2
cloog: removed included isl
Merge btrev43068 instead of rebasing and resolving conflicts.