Fix a bug in linux GPU vendor searches. With Intel integrated graphics, this function would return 'ati' as the vendor name because 'ati' was in the string Intel Corporation. Change the search to look at a list of strings to match a vendor name. This should work with any of the known vendors at this point in time.
Merge pull request #5320 from zmarano/gpu_fix

Fixes issue 5058: Fix a bug in linux GPU vendor searches. With Intel integrated graphics, ...