Make FileExists and PathSearch more consistent across OS.
Make FileExists and PathSearch more consistent across OS.

tschmidt23/Pangolin,renzodenardi/Pangolin,stevenlovegrove/Pangolin,wxdzju/Pangolin,visigoth/Pangolin,randi120/Pangolin,tschmidt23/Pangolin,tschmidt23/Pangolin,renzodenardi/Pangolin,visigoth/Pangolin,mp3guy/Pangolin,pinglin/Pangolin,randi120/Pangolin,arpg/Pangolin,arpg/Pangolin,stevenlovegrove/Pangolin,mp3guy/Pangolin,stevenlovegrove/Pangolin,mp3guy/Pangolin,pinglin/Pangolin,wxdzju/Pangolin