Add translation file locations back.

Skip line numbers because they cause diff churn. Also, keep sorting
by msgid to prevent churn from adding new files.

Makefile

@@ -194,10 +194,10 @@ pseudoxml:
 all-source:
 
 locale/circuitpython.pot: all-source
-	find . -iname "*.c" | xargs xgettext -L C -s --no-location --keyword=translate -o circuitpython.pot -p locale
+	find . -iname "*.c" | xargs xgettext -L C -s --add-location=file --keyword=translate -o circuitpython.pot -p locale
 
 translate: locale/circuitpython.pot
-	for po in $(shell ls locale/*.po); do msgmerge -U $$po -s --no-fuzzy-matching --no-location locale/circuitpython.pot; done
+	for po in $(shell ls locale/*.po); do msgmerge -U $$po -s --no-fuzzy-matching --add-location=file locale/circuitpython.pot; done
 
 check-translate: locale/circuitpython.pot $(wildcard locale/*.po)
 	$(PYTHON) tools/check_translations.py $^