Make H232 message mention its py3 related

Since H323 is a python 3.x compatibility check the message returned to
the user should say so.

Change-Id: Ib27bac23313a62e2c1e01d73e02f3360cdda490f
Make H103 Invalid Apache throw error on correct line

H103 shouldn't trigger on the first line of a file, but rather on the
first line of the apache licence in the file.  Otherwise the error can
be confusing to users.

Change-Id: Ib0f49d50c9541dd93ace6dd29361e143eb0b6828