Sort FreeBasic keywords alphabetically
FreeBasic: Fix preprocessor keywords list

See http://www.freebasic.net/wiki/wikka.php?wakka=CatPgFunctIndex

Part of [feature-requests:#691]
FreeBasic: Update keywords

Patch from TJF.  Part of [feature-requests:#691]
Merge branch 'freebasic-ft-update'