Update .exe's to .zip's following changes at BBS FTP site
Fix BBS50 species table

Ports b80f9cab2df4b03302e736beff01b8345af8c34f and
80f07a07649f46c6e7b2f21aaa743c41a5340438 and
14475dd98ea3b2d7251361fca5c3702ffe410f2a

into BBS50.
Merge pull request #148 from ethanwhite/fix-bbs50

Fix BBS50 script