Merges into Translations units the features required by PoChecker and other translations check/maintenance tools.
Two added properties to TPoFileItem: LineNr and Identifier.
CheckFormatArguments to spot Format argument errors, and mark them with fuzzy flag and 'badformat' flag.
CleanUp to clean up PreviousID's or badformat flags.
Patch 26876 from G. Colla


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46578 4005530d-fff6-0310-9dd1-cebe43e6787f
pochecker: using new Translation unit. Disable -dUSE_NEW_TRANSLATIONS to get old behaviour. patch 26877 from G. Colla


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46579 4005530d-fff6-0310-9dd1-cebe43e6787f