Log Message:
Update to 2.8.3. Split off common parts with py-qt4-qscintilla into
Makefile.common.

v2.8.3 3rd July 2014
  - Added the QsciLexerCoffeeScript class.
  - Font sizes are now handled as floating point values rather than integers.
  - Bug fixes.

v2.8.2 26th May 2014
  - Added the QsciLexerAVS class.
  - Added the QsciLexerPO class.
  - Added the --sysroot, --no-sip-files and --no-qsci-api options to the Python
    bindings' configure.py.
  - Cross-compilation (specifically to iOS and Android) is now supported.
  - configure.py has been refactored and relicensed so that it can be used as a
    template for wrapping other bindings.
  - Bug fixes.

v2.8.1 14th March 2014
  - Added support for iOS and Android.
  - Added support for retina displays.
  - A qscintilla2.prf file is installed so that application .pro files only
    need to add CONFIG += qscintilla2.
  - Updated the keywords recognised by the Octave lexer.
  - Bug fixes.