* Added support for building shaders in your mod

* Added nav mesh support
* fixed many warnings and misc bugs
* Fixed the create*projects scripts in mp
* Added a bunch of stuff to .gitignore

sp/src/materialsystem/stdshaders/cleantemps.bat

@@ -0,0 +1,12 @@
+@echo off
+setlocal
+
+if exist fxctmp9_tmp rd /s /q fxctmp9_tmp
+if exist vshtmp9_tmp rd /s /q vshtmp9_tmp
+if exist pshtmp9_tmp rd /s /q pshtmp9_tmp
+
+if exist fxctmp9_360_tmp rd /s /q fxctmp9_360_tmp
+if exist vshtmp9_360_tmp rd /s /q vshtmp9_360_tmp
+if exist pshtmp9_360_tmp rd /s /q pshtmp9_360_tmp
+
+if exist shaders rd /s /q shaders