compiler: forbid identifiers named "init" in package scope.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch@200427 138bc75d-0d04-0410-961f-82ee72b054a4
Merge branch 'gcc-4_8-branch' of git://gcc.gnu.org/git/gcc into linaro-staging

Change-Id: If5e745f1414cc639483cebb018b2e103cedf3f15
Signed-off-by: Rob Beane <robbeane@gmail.com>