NetworkLayer: Removed getInterfaceModule from InterfaceEntry.

This function returned the module that created the interface which is not the interface module.
NetworkLayer: Renamed getNetworkInterfaceModule to getInterfaceModule.
NetworkLayer: Fixed interfaceModule member to really hold the interface module.
Common: Removed obsolete and unpredictable ModuleAccess class.
Common: Removed obsolete and unpredictable findModuleWherever*.
makefrag: added newline at end of file
aodv-uu: minor: progname is a pointer to a constant string
ran clang-modernize-3.5 -use-nullptr
ran clang-modernize-3.5 -add-override

for run:
 - generate path.lst in inet/src: `find . -type d | sort >path.lst`
 - added parameters "-add-override -include-from=path.lst" for clang-modernize-3.5
NetworkConfiguratorBase: C++11 changes: nullptr, constructor style
ran clang-modernize-3.5 -loop-convert