interface/extract_interface.cc: take TargetOptions object from CompilerInstance
interface/extract_interface.cc: take TargetOptions object from CompilerInstance

The memory management of TargetOptions has changed in recent clangs.
Taking TargetOptions from the CompilerInstance seems to work in both
older and newer versions of clang.

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

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