Delete unnecessary package name
Merge branch 'master' (gcc-4.7, commit '4a23176') into gcc-4.6

Conflicts:
	source/s-unwrai.adb
Remark some names that gdb knows and remove __gnat_raise_nodefer_with_msg
Merge branch 'master' (gcc-4.7, commit 'ce3abbe') into gcc-4.6

Conflicts:
	source/s-taskin.ads
	source/s-unwrai.adb
	source/s-unwrai.ads

Reversions:
	source/s-unwrai.adb