Ignore auto-generated files
Add missing return statment in call_pocl_workgroup
Avoid warning on systems without /proc/cpuinfo
Ignore testsuite output files in git
cl_Finish.c: Avoid accidental assignment to command_ready
clGetImageInfo.c: Use correct variable sizes
Correct several const problems
Add some missing #include statements
Avoid compiler warnings in complicated boolean expressions
clEnqueueFillImage.c: Use correct variable type
Ignore auto-generated file
Added alternative build instructions on OSX with dependencies from homebrew.