* src/DateHandler/_DateHandler.py: Split into parts.
* src/DateHandler/_DateUtils.py: Add new file.
* src/DateHandler/_Date_sk.py: Bring to the new module structure.
* src/DateHandler/Makefile.am (pkgdata_PYTHON): Ship new file.
* src/GrampsDb/_ReadGedcom.py: Import from proper module.
svn: r6657