configure: fix out-of-source build
configure: fix out-of-source build

Patch by: Niels Ole Salscheider

git-svn-id: e7f1ab7c2a259259587475a3e7520e757882f167@184990 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libclc,llvm-mirror/libclc,llvm-mirror/libclc,llvm-mirror/libclc,llvm-mirror/libclc,llvm-mirror/libclc,llvm-mirror/libclc