Revert r288787: Add missing stdbool.h module.
Revert r288787: Add missing stdbool.h module.

Reverting because I didn't properly test this patch. Although it's probably
correct to add a stdbool_h module I thought the change fixed more than it did.
I'll re-commit after more investigation.


git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@288789 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx