The ports generate pc files, but don't call vcpkg_fixup_pkgconfig() so that there are absolute paths in the pc files

# Conflicts:
#	ports/aom/vcpkg.json
#	ports/capnproto/portfile.cmake
#	ports/capnproto/vcpkg.json
#	ports/fcl/portfile.cmake
#	ports/fcl/vcpkg.json
#	ports/libbson/vcpkg.json
#	ports/mongo-c-driver/portfile.cmake
#	ports/mongo-c-driver/vcpkg.json
#	versions/a-/aom.json
#	versions/a-/armadillo.json
#	versions/baseline.json
#	versions/c-/capnproto.json
#	versions/f-/fcl.json
#	versions/l-/libbson.json
#	versions/m-/mongo-c-driver.json
#	versions/p-/polyclipping.json