[Lazarus] LRT form resource string format is dropped, LRJ is used instead

[Maxim Ganetsky]

Hello.

Since r52679, form translation strings are no longer extracted to LRT 
files. Support for this format was dropped. From now on we use LRJ files 
with the format identical to RSJ files which are emitted by FPC 3.0.0 
and up.

This change was needed because LRT file format was broken by design, 
e.g. it never handled multiline captions properly (see bug 26553 for 
details).

In order to migrate to new format you should open your project and click 
"Project" -> "Resave forms with enabled i18n" menu item, then rebuild 
your project. After this you can safely remove LRT files.

Please test.

-- 
Best regards,
  Maxim Ganetsky                  mailto:ganmax at narod.ru