Bug#791114: libdap: library transition may be needed when GCC 5 is the default

[Simon McVittie]

Control: retitle 791114 transition: libdap (g++-5)
Control: forwarded 791114 
https://release.debian.org/transitions/html/libdap.html

I believe this one is ready for binNMUs.

nmu gdal_1.10.1+dfsg-9 . ALL . -m 'Rebuild against libdap17v5'
nmu grads_2:2.0.2-5 . ALL . -m 'Rebuild against libdap17v5'