Correct problems in raptorinstallermaker.py: ensure missing directories' names are printed rather than %s when checking Win32 support directory, and remove final reliance on SBS_HOME environment variable (use only the value passed to the -s switch).

NOTESRC_RELEASER
Symbian Software Ltd. (kits.notify@symbian.com)

NOTESRC_RELEASE_REASON
Symbian Build System release.