gargoyle: only grab the "-jN" option from MAKEOPTS and pass it to jam
tree92b5f6b93c71d448f017e3da675b1274d7e6e6b1
drwxr-xr-x - dev-games
drwxr-xr-x - dev-lang
drwxr-xr-x - games-engines
drwxr-xr-x - games-util
drwxr-xr-x - licenses
drwxr-xr-x - metadata
drwxr-xr-x - profiles
drwxr-xr-x - virtual