potx 6.x-3.1

Changes since DRUPAL-6--3-0:

• #556770 by Dave Reid: remove extra whitespace
• #556774 by Dave Reid: exclude files in the 'tests' directories from parsing too; also fix a .svn/.git matching bug
• #541000 by Dave Reid: PHP 5.3 compatibility - split() is deprecated, but we should be fine with explode()
• #472844 by Dave Reid: allow both enabled and disabled modules/themes to be extracted from
• #471124 by Dave Reid: exclude *.api.php files from parsing, so that strings in there do not end up being up for translation
• #559068 by myself: centralize default major version in potx.inc so we don't need to update multiple things when recommitting potx.inc between different major branches of the module
• #571538 by myself: adding tests to translation template extractor
• Hungarian translation of potx 6.x-3.0 by Zoltán Balogh
• #609590 by myself: fix issue with empty strings being extracted from buggy sources
• updated .pot
• german translation, updated to branch 6--3
• 232576 by seals: Updated Swedish translation.
• #529978 by myself: make potx skip its internal files by default when using command line extraction, so that the potx internal strings are not included in the output; otherwise, let potx be used to parse itself when not autoparsing on the command line
• #535296 by kaido24: Estonian translation