Fix the .categories, it had "dataformatter" not "dataformatters".

Remove the getCategory from TestDataFormatterObjC.py, since it was superceded by the .categories file, 
and didn't work anyway (getCategories currently has to be a method on the test class, not on the test.)
Add a "basic_process" category, and start to find some tests for simple process running sniff tests.

llvm-svn: 176061