Check the SDL version only when the BZFlag client is to be built. Pass the --disable-manual configure option to curl to avoid a man page dependency.
Check the SDL version only when the BZFlag client is to be built.
Pass the --disable-manual configure option to curl to avoid a man page dependency.

git-svn-id: 67bf12f30ddf2081c31403e0b02b2123541f1680@21941 08b3d480-bf2c-0410-a26f-811ee3361c24

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