[translations] Merge 3 pot files to one.

[Hannes Lilljequist]

>> I tried the extract.php file, but that gave me 3 .pot files  
>> general.pot,
>> onlinestatus-module.pot and messengers-inc-php.pot.
>> The Translator's guide suggest to have one modulename.pot file in the
>> module/po folder.

AFAIK the strings in general.pot should not be included in your pot  
file as they are also in Drupal core. It's to avoid different  
translations of the same strings.

/Hannes (zoo33)