Should use the system copy.
opal-3* can use system gsm lib. As it should be added in portage (soon I hope), may be waiting for it should be enough ? See bug #238610. (actually, your bug make me realize this lib is in portage so i'm gonna change my ebuild)
opal-3* is now in the tree and this bug is not affecting it. As soon as opal-2* will leave the tree (ie. when ekiga-2* will leave the tree), this bug will be fixed.
Our bugzilla reflects ~arch tree. So this bug is actually fixed. Thank you guys.