* tests/libtracker-fts/tracker-parser-test.c: Added new unit tests
	for stop-words.

	* src/libtracker-common/tracker-language.c
	* docs/manpages/tracker-store.1
	New TRACKER_LANGUAGE_STOP_WORDS_DIR environment variable to specify
	the path where stop words dictionaries are available, used for
	testing.

	* src/libtracker-fts/tracker-parser-glib.c
	* src/libtracker-fts/tracker-parser-libicu.c
	* src/libtracker-fts/tracker-parser-libunistring.c
	Check for stopword is done before the word stemming, if applicable.