2008-02-24  Tor Lillqvist  <tml@novell.com>

	* glib/gutils.c (_glib_get_installation_directory): New internal function.

	* glib/gspawn-win32.c: When spawning the helper process, use an
	explicit full path. (#518292)

	* glib/gspawn-win32.c
	* glib/gspawn-win32-helper.c: Fix race condition when using the
	helper process: When the helper process writes the handle of the
	actual started user process to the parent process, it must be
	duplicated in the parent process with DuplicateHandle() so that it
	is a valid handle in that process. However, if the helper process
	has happened to exit before the DuplicateHandle() call, the
	duplication will fail. Thus we must synchronise the helper
	process's exit. Use another pipe for this.

	Take care not to inherit the writing end of this pipe to the
	helper process. Also, in the helper process, take care not to
	inherit either of the pipes used for communication with the parent
	process to the started user process.


svn path=/trunk/; revision=6575