Revert r179012: "[msan] Intercept glob()."

This was committed without tests and contains obvious bugs. That's not
acceptable. It broke address sanitizer for most programs using glob(3).

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@179054 91177308-0d34-0410-b5e6-96231b3b80d8