Fix make check compilation.

TestRarFile: StringUtils::EndsWith no longer takes a third parameter
TestCharsetConverter: CCharsetConverter::subtilteCharsetToW's first
parameter cannot be a std::wstring, ::stringCharsetToUtf8 renamed to
::ToUtf8
TestJobManager: CJobManager::IsPaused renamed to IsProcessing with reverse
effect, s/UnPause/UnPauseJobs. Only PRIORITY_LOW_PAUSABLE jobs can be paused.
TestSortUtils: SortItems is now a std::vector<boost::shared_ptr<SortItem>> not
an std::vector<SortItem>

I have not had a chance to actually run the tests yet, because linking failed on my last build due to a mixed gles/gl build and I have to leave soon.