Hello!
I've opened bug report 815045 (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815045) because I couldn't connect to our sametime server when using libmeanwhile1 version 1.0.2.7 (when using 1.0.2.4 no error occured). As Vasi B. wrote debian/rules file must be updated (CFLAGS variable must be changed to CFLAGS="$(CFLAGS) -fno-tree-vrp").
Could you please change debian/rules file for libmeanwhile1, rebuild the package and update "lilbmeanwhile1.deb" in testing repository.
With kind regards,
Andreas Wagner