A new version of linuxdcpp was released! I reused the existing ebuild for 1.0.1-r2 in my local overlay and everything worked quite well. From what I gather from the Changelog, the two patches aren't necessary any more (I didn't check if they apply at all). Hope you can push that upstream for others to enjoy.
Oops, I just noticed that one dependency in the ebuild has to be changed: From Changelog: [2008-06-08] Minimum version of GTK+ required is now 2.8. (the current dependency if the ebuild demands 2.6)
In CVS, thanks