Some configure.json files contain new lines inside quoted strings,
which is not conformant with the JSON spec.
Add a new json_parser python module which uses pyparsing to preprocess
the json files to remove the new lines inside the quoted strings, and
then hands over the preprocessed content to the regular json module.
Change-Id: I5f8938492068dda5640465cc78f5a7b6be0e709a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Qt CMake Build Bot
