fixed cp35146 - instances of RegexObject returned by re.compile are cached
removed Console.WriteLine
Merge pull request #191 from paweljasinski/cp35146

fixed cp35146
fixed cp35135 - re extension flag can contain multiple letters

all processed re extension flags are removed once converted to option
Merge pull request #192 from paweljasinski/cp35135

fixed cp35135 - re extension flag can contain multiple letters
fixed compile problem in 3.5 and silverlight