Since mozilla >= 0.9.7 fails to build on my system (ydl2.1) with different error messages every time I started to mess around with the ximian source rpms.
I'd love to have the gdkxft patch incorporated so I did a "rpm -ba" on the .spec first to see wheter it builds at all.

Now my question:
Is there a way to build a binary rpm package without going the whole way again after patching? Something like rpm2cpio just the other way round where I can patch the unpacked source tree and build the binary rpm again. Just like make which rebuilds only the more recent sources and links everything again that depends on it.