Change library file name check to be case-insensitive. Refactoring.

Author: ombre42

atest/run.py

@@ -51,7 +51,7 @@
 name = interpreters + '_-_' + library_file.rsplit('.', 1)[0]
 args = [runner_interpreter, '-m', 'robot.run', '--name', name,
  '--output', OUTPUT, '--log', 'NONE', '--report', 'NONE']
-if 'Minimal' in library_file:
+if 'minimal' in library_file.lower():
  args.extend(['--exclude', 'argsknown'])
 args.extend(clargs or [join(BASE, 'tests')])
 print 'Running tests with command:\n%s' % ' '.join(args)