add a top-level .gitignore
-rw-r--r-- 273 .gitignore
-rw-r--r-- 1437 CMakeLists.txt
drwxr-xr-x - cmake
drwxr-xr-x - docs
drwxr-xr-x - icd
drwxr-xr-x - include
drwxr-xr-x - loader
-rwxr-xr-x 6848 xgl-generate.py
-rw-r--r-- 29951 xgl.py