Rework --enable-custom-plugins to make better use of AC_ARG_ENABLE features. Add configure --enable-custom-plugins-file option. (Note that each use of AC_CONFIG_FILES requires a distinct argument.)
Rework --enable-custom-plugins to make better use of AC_ARG_ENABLE features.
Add configure --enable-custom-plugins-file option.
(Note that each use of AC_CONFIG_FILES requires a distinct argument.)

khonkhortisan/bzflag,adamsdadakaeti/bzflag,adamsdadakaeti/bzflag,adamsdadakaeti/bzflag,adamsdadakaeti/bzflag,khonkhortisan/bzflag,kongr45gpen/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,kongr45gpen/bzflag,khonkhortisan/bzflag,kongr45gpen/bzflag,adamsdadakaeti/bzflag,kongr45gpen/bzflag,kongr45gpen/bzflag,adamsdadakaeti/bzflag,khonkhortisan/bzflag,kongr45gpen/bzflag,adamsdadakaeti/bzflag,kongr45gpen/bzflag,khonkhortisan/bzflag,kongr45gpen/bzflag