polyorb build ok with gnat-4.9

[Xavier Grave <xavier.grave@ipno.in2p3.fr>]

Hi,

I have a first build version [1] of polyorb with gnat-4.9 (at least !).
It's building a very up to date [2] version of upstream.
My code source checks seem to indicate that the PCS_version are 
compatible.

I have tests available mostly on the dsa part, I'll be interested if 
people can be volunteers to test CORBA part.
The test suite is still disabled and I'll check this as soon as 
possible.

xavier
[1] org.debian.polyorb a60b2e30ffad798f3666803b079f5e254804bf45
[2] com.adacore.polyorb.debian a33ec96a70d7827d73ad160eceee81781cd529cd