Make POT creation rule phony, preventing useless ctime-only changes

Also adds an "update-pot" rule to just update the pots, with no merging
of the pos (not really useful if not for debugging)

git-svn-id: http://svn.osgeo.org/postgis/trunk@13089 b70326c6-7e19-0410-871a-916f4a2858ee
Update all translation files needing to be

The updated template files _and_ translations have already
been pushed up to Transifex.

git-svn-id: http://svn.osgeo.org/postgis/trunk@13090 b70326c6-7e19-0410-871a-916f4a2858ee
Review one fuzzy string in italian translation

Confirms dropping the "fuzzy" label puts the translation in actual use

git-svn-id: http://svn.osgeo.org/postgis/trunk@13091 b70326c6-7e19-0410-871a-916f4a2858ee