Added a few strings.

Updated POT template with "php potx-cli.php --files potx-cli.php potx.inc potx.info potx.install potx.module"

#368197 by Pasqualle and Dave Reid: do not extract machine name of module and theme, since it is not displayed on the user interface anymore

#402734 found by Dave Reid, patch by myself: modulename.something.ext files were not extracted when the modulename prefix was looked for.

#322082 follow up based on comment from Takafumi: PHP versions before 5.2.0 did not provide the filename key in the pathinfo() output

Now that the localization API guides are online at http://drupal.org/node/322729, we can link to specific sections for code style errors found in the potx review.

I tried hard to find out how to pass on data for the generic (Drupal Docs) link, but did not succeed at all. This 'Read the documentation' link text also seems much friendlier.

#306402 by myself: fix support for the new hook_perm() parsing with Drupal 7 code by skipping that Drupal 5/6 parser section. Drupal 7 now has native t() in hook_perm() so no reason to do magic.

This expands on the existing structured reporting mode to separate the code excerpt, which we don't need in coder reviews.
Also unifies how the excerpt appears; now with the file name and line in one sentence for easy error location spotting if potx is used outside of coder.

#213868 by Dave Cohen, Freso and myself: check our required token PHP extension, so people know that the module has an external dependency to make it work.

 - add the POTX_STATUS_STRUCTURED reporting mode
 - rework potx_status() to accept  and  separately, instead
   of integrating them into the messages in different random forms
 - automatically append file and line info in all but the structured
   reporting mode
 - slightly better messages where 'Invalid marker content' was before
 - updated to the latest coder API, using _coder_error() instead of theme('coder_warning', ...)

Preliminary support for parsing Drupal 7.x source files. There is already a hook_perm() change in Drupal 7 which does not have handler code yet, but things which work the same way in Drupal 6 should work still.

Forward port of '#298996 reported gusgsm1, patch by myself' and '#263790 reported by Micha1111, patch by myself'

#288117 reported by Bartezz, fixed by myself: avoid that people run potx-cli.php from the web, since it was not designed so. tell them to use the module web interface.

#205100 by phirdina: plural translations were missing in exported po files due to bugos database logic

 - updated documentation to match actual behaviour (folding, tab title)
 - some code style changes from the 6.1 version
 - ported region name and default user role detection from 6.1
 - ported duplication marking for installer strings in runtime export from 6.1