Change llvm.gcroot to not init the root to null at runtime, this prevents
-rw-r--r-- 6061 CREDITS.TXT
-rw-r--r-- 3100 LICENSE.TXT
-rw-r--r-- 4346 Makefile
-rw-r--r-- 2757 Makefile.common
-rw-r--r-- 8071 Makefile.config.in
-rw-r--r-- 62530 Makefile.rules
-rw-r--r-- 92 ModuleInfo.txt
-rw-r--r-- 483 README.txt
drwxr-xr-x - Xcode
drwxr-xr-x - autoconf
-rwxr-xr-x 1986 build-for-llvm-top.sh
-rwxr-xr-x 1093559 configure
drwxr-xr-x - docs
drwxr-xr-x - examples
drwxr-xr-x - include
drwxr-xr-x - lib
-rw-r--r-- 1890 llvm.spec.in
drwxr-xr-x - projects
drwxr-xr-x - runtime
drwxr-xr-x - test
drwxr-xr-x - tools
drwxr-xr-x - utils
drwxr-xr-x - website
drwxr-xr-x - win32