Actually I have (at least from this adress:
http://code.google.com/p/lazarus-br/source/checkout, as the link in the post you gave me doesn't work anymore). Trying to install the lzRichEdit from the SVN gives me an error.
/usr/bin/ld: warning: /home/jerik/.lazarus/bin/link.res contains output sections; did you forget -T?
/home/jerik/Lazarus/Components/lazarus-br-read-only/package/lzRichEdit/lib/x86_64-linux/wsrichbox.o: In function `REGISTERCUSTOMRICHBOX':
/home/jerik/Lazarus/Components/lazarus-br-read-only/package/lzRichEdit//widgetset/wsrichbox.pas:96: undefined reference to `WSRegisterCustomRichBox'
/usr/lib/lazarus/ide/lazarus.pp(133,1) Error: Error while linking
/usr/lib/lazarus/ide/lazarus.pp(133,1) Fatal: There were 1 errors compiling module, stopping