use timedifference from eDVBLocalTimeHandler for time() calls in python

[vuplus_dvbapp] / lib / python / Tools / Makefile.am

installdir = $(LIBDIR)/enigma2/python/Tools

install_DATA = \
        FuzzyDate.py XMLTools.py Directories.py NumericalTextInput.py \
        KeyBindings.py BoundFunction.py ISO639.py Notifications.py __init__.py \
        RedirectOutput.py DreamboxHardware.py Import.py Event.py CList.py \
        RedirectTime.py