cad/brlcad: fix pkg-plist

pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libanalyze.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libbg.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libbn.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libbrep.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libbrlcad.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libbu.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libdm.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libfft.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libgcv.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libged.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libicv.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libnmg.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/liboptical.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libpc.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libpkg.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/librt.pc:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/cad/brlcad/work/stage/usr/local/brlcad/libdata/pkgconfig/libwdb.pc:No such file or directory

Additionally:

• - REINPLACE_CMD ran, but did not modify file contents: CMakeLists.txt