configure.ac: link in llvm option component in extract_interface
configure.ac: link in llvm option component in extract_interface

Recent versions of the clang driver use LLVM's Option library.

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

simbuerg/isl,cfx-next/toolchain_isl-upstream,jleben/isl,SaberMod/isl-current,Distrotech/isl,PollyLabs/isl,jleben/isl,evaautomation/isl,Meinersbur/isl,Meinersbur/isl,BobSaget-Mod/libisl,UBERTC/isl,SaberMod/isl-current,BenzoSM/isl,VanirLLVM/toolchain_isl,PollyLabs/isl,cfx-next/toolchain_isl-upstream,VanirLLVM/toolchain_isl,BenzoSM/isl,jleben/isl,Distrotech/isl,nicolasvasilache/isl,VanirLLVM/toolchain_isl,BobSaget-Mod/libisl,cfx-next/toolchain_isl-upstream,simbuerg/isl,cfx-next/toolchain_isl-upstream,Distrotech/isl,Meinersbur/isl,inducer/isl-mirror,UBERTC/isl,inducer/isl-mirror,evaautomation/isl,crossbuild/isl,abduld/isl,nicolasvasilache/isl,KangDroidSMProject/ISL,inducer/isl-mirror,BenzoSM/isl,evaautomation/isl,evaautomation/isl,cfx-next/toolchain_isl-upstream,jleben/isl,PollyLabs/isl,UBERTC/isl,UBERTC/isl,abduld/isl,crossbuild/isl,tobig/isl,Meinersbur/isl,SaberMod/isl-current,abduld/isl,Distrotech/isl,SaberMod/isl-current,BenzoSM/isl,Distrotech/isl,abduld/isl,BobSaget-Mod/libisl,simbuerg/isl,PollyLabs/isl,BobSaget-Mod/libisl,nicolasvasilache/isl,BobSaget-Mod/libisl,KangDroidSMProject/ISL,VanirLLVM/toolchain_isl,tobig/isl,nicolasvasilache/isl,KangDroidSMProject/ISL,simbuerg/isl,jleben/isl,BenzoSM/isl,VanirLLVM/toolchain_isl,inducer/isl-mirror,PollyLabs/isl,tobig/isl,KangDroidSMProject/ISL,crossbuild/isl,nicolasvasilache/isl,inducer/isl-mirror,tobig/isl,crossbuild/isl,simbuerg/isl,KangDroidSMProject/ISL