clover: Adapt libclc's INCLUDEDIR and LIBEXECDIR to make use of the new introduced libclc.pc.

Tom Stellard:
  -Keep --with-libclc-path and mark it deprecated.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
(cherry picked from commit 959e83d65075513f989cb1fe634dca314a7e185f)
4 files changed