Prevent modulo 0
Fix wrong memory allocation and sound selection
Merge pull request #78 from cinaera/pr_modulo

Fix several bugs for ingame sounds
Rename "Ambient" to "Map Sound"
Add shift + right click to delete a quad (Suggestion by Welf)
link against libcurl - works on lunix, yet to be tested on windoze

Conflicts:
	scripts/make_release.py
oops i accidentally a vim swap file
moar dlls for the windoze