rcc test: Streamline test

- Add the path to expand the timestamp files as a parameter to doCompare()
  and check that the file is found. It is then no longer necessary to change
  the working directory in rcc().
- Fix the line number output in doCompare()
- Move helper readLinesFromFile() up and make the split mode a parameter so
  that it can be used for reading files without stripping empty lines
- Remove the helper findExpectedFile() which apparently was meant to
  introduce some version scheme in Qt 4.5 but was never continued.

Task-number: PYSIDE-855
Change-Id: I3d8cf957995fec8e34cddb4992fc8854148c7bdc
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>
Reviewed-by: hjk <hjk@qt.io>

0 files changed, 0 insertions, 0 deletions