Hello, this is the part of mediastreamer update, see bug 356977 for details.
Created attachment 264279 [details, diff] mediastreamer-ilbc-2.0.3.ebuild.patch Changes between mediastreamer-ilbc-2.0.1.ebuild and mediastreamer-ilbc-2.0.1.ebuild. Please note, that build system has been altered upstream, thus strict and debug options has no use now.
I don't see that this package requires recent mediastreamer, thus removing blocker.
New version is in the tree. Thank you for report.