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.

 There is a race condition upon calling IsProcessing for the first time
 after AddJob is called - the job may not have been started yet and not
 added to the processing list. As such, the test implements a custom CJob
 that allows the calling thread to block until the job has started processing
 such that IsProcessing can be checked in a deterministic way.

 CancelJobs effectively renders CJobManager useless after it is called,
 because m_running is set to false. A new member "Restart" was added to
 set this variable back to true when appropriate.

 IsProcessing should have returned false when jobs were paused.

TestSortUtils: SortItems is now a std::vector<boost::shared_ptr<SortItem>> not
an std::vector<SortItem>
TestStreamDetails: Aspect ratio 2.39 is now within the 2.37 - 2.47 range and
as such snaps to 2.40