Fix some warnings from Clang in release builds:
-rw-r--r-- 1485 .gitignore
-rw-r--r-- 8933 CMakeLists.txt
-rw-r--r-- 8622 CREDITS.TXT
-rw-r--r-- 3194 LICENSE.TXT
-rw-r--r-- 7862 Makefile
-rw-r--r-- 2706 Makefile.common
-rw-r--r-- 11150 Makefile.config.in
-rw-r--r-- 76810 Makefile.rules
-rw-r--r-- 125 ModuleInfo.txt
-rw-r--r-- 565 README.txt
drwxr-xr-x - autoconf
drwxr-xr-x - bindings
-rwxr-xr-x 2272 build-for-llvm-top.sh
drwxr-xr-x - cmake
-rwxr-xr-x 689755 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 - unittests
drwxr-xr-x - utils
drwxr-xr-x - website