Remove outdated MSVC project files
Attempt to fix spectators being stuck when they stop following dead/disintegrated clients. Related to #367
Fix invalid CMake lib directory when searching for OpenAL32 on Windows.
Remove unused Mac/XCode project files
Fixed a linux warning fix causing problems in BG_CycleForce.
Some weird case where some force power strings will not actually cycle (forceprev/forcenext) because of the previous change here.
This commit reverts codemp/game/bg_misc.c change within 45a8687e.