Small fix which makes pas2c engine successfully replay demos

- Pas2C: make use of 'external' function decorator - Fixes to rtl - Some work here and there

Implement needed rtl functions

It compiles \o/ Doesn't link yet though, need to implement new rtl functions

fix lq rope being always drawn on screen with same width regardless of zoom

fix misleading indentation

Even more explicit type conversions and other stuff to help pas2c use ansistrings

Implicit type casts to help pas2c

Revert 88929358d2e1 in favor of ansistrings implementation in pas2c

Implement a bit of astring

Pas2C recognizes ansistrings

Fix build with old base package

disallow sinegun to penetrate solid land

fix potential buffer overflow

rolling back my PChar stuff, because unC0Rr improves string handling pas2c instead <3

Merge

get rid of hwpow. ~so long and thanks for all the wtfish~

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