[Lazarus] Creating patches

[Hans-Peter Diettrich]

How can I create and apply patches to Lazarus?

First problem is SVN, which does not allow for "incremental" patches, 
i.e. a big patch cannot be split into smaller steps, as frequently 
requested by the developers. Solutions?

Next problem are patches created by Git, which seem to be undecipherable 
by TortoiseSVN "Apply patch..." on Windows. Which tools can be used, on 
which platform, to apply diffs or patches? [see TabCtrl0/1.patch on 
Mantis http://bugs.freepascal.org/view.php?id=19575].

DoDi