Fixing os_version_check.c to be actual C source
Fixing os_version_check.c to be actual C source

The initial implementaiton was using the C++ typeof keyword. This
causes the compiler to spew warnings unnecissarilly. This patch removes
the uses of typeof and replaces them with explicit typedefs of the
function types.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@334981 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt