The reverse of <a href="show_bug.cgi?id=23742">#23742</a>, either because the original fix was flawed or the meaning of apache USE flags has changed since then. Quoting 'euse -i apache2', the flag in question is meant for choosing apache2 over apache1 when the package in question supports both, not to enable or disable Apache support in general. The attached patch seems to fix the problem. It probably won't hurt to have someone highly familiar with the workings of the depend.apache ECLASS review the result, though.
Created attachment 91610 [details, diff] subversion-1.3.2-r1.ebuild-apacheNo2.patch Oops, used the wrong syntax for the link to the older bug. Anyway, here is the patch.
We won't be doing this, subversion requires apache-2, no need to mess w/ the use flag.
In that case, USE=apache2 shouldn't be set by default, just like USE=apache isn't. After all not many people actually need to run a Web server at their machines.