Fix tons and tons of pas2c warnings (but still not all of them)

fix indentation of previous commit and simplify rc-plane's angle-fix after portal code

Drop support for other string types than string255

simplify rc-plane's angle-adjustment-after-wrap code

CMake checks for haskell modules needed

update FSF address. note: two sdl include files (by Sam Lantinga) still have the old FSF address in their copyright - but I ain't gonna touch their copyright headers

whoops, lost a space

fix a relevant warning I caused by accident

fixing the remaining PChar issues pas2c ran into to this point, now it stops because of being unable to deal with "set of char"

yo dawg, I herd you like PChar...

remove obsolete type conversions that messed with pas2c

fix some string related pas2c issues

use uConsts rather than including config.inc more than once

add travis dependencies

fix for issue #777 (IceGun: Segfault when freezing water, with rqBlurryLand enabled)