Bug#736244: missing license in debian/copyright

[Thorsten Alteholz]

Package: libexosip2
Severity: serious
User: alteholz at debian.org
Usertags: ftp
X-Debbugs-CC: ftpmaster at ftp-master.debian.org
thanks

Dear Maintainer,

according to debian/copyright the files are licensed under GPLv2+. But
libeXosip2-4.1.0/tools/sip_reg.c is only GPLv2.
Please add this exception to debian/copyright.

Thanks!
   Thorsten