ENH: Use settings for CPackComponents test to make it fail if the recent fix of cmCPackGenerator.cxx revision 1.16 ever encounters another regression.

BUG:  Fix find of assistant on Mac.

BUG:  Fix regression in finding QtAssistant

     supports gcc, nmake, and visual studio in all configurations.

BUG: Added unicode paths for wxWidgets_LIB_DIR search and the 2.8.9 suffix for wxWidgets_ROOT_DIR search.

When CMake is built by CMake 2.4 or lower the FindCVS module is not
available.  In that case we activiate CTest.UpdateCVS by searching for
the cvs command directly.

This creates new tests "CTest.UpdateSVN" and "CTest.UpdateCVS".  They
test that the Update.xml produced by CTest for a version-controlled
project contains entries for files added, changed, and removed.

The output of "cvs update" contains a line such as one of

  cvs update: `foo.txt' is no longer in the repository
  cvs update: foo.txt is no longer in the repository
  cvs update: warning: foo.txt is not (any longer) pertinent

when file "foo.txt" has been removed in the version to which the update
occurs.  Previously only the first case would be recognized.  This fixes
the regular expression to match all these cases.