Fix missing out into the parameter Traceback of System.Unwind.Traceback.Separated.Get_Traceback
Delete explict with clauses of System.Debug
Merge branch 'master' (gcc-4.7, commit 'e04bc13') into gcc-4.6

Conflicts:
	source/s-unwrai.adb
	source/zcx/s-unrase.adb
	source/zcx/s-unwhan.adb

Modifications:
	source/zcx/s-unrase.adb
	source/zcx/s-unwhan.adb