[Ada] OS constants management

[Samuel Tardieu]

>>>>> "Arnaud" == Arnaud Charlet <charlet@adacore.com> writes:

Arnaud> This change generalizes the mechanism used to generate
Arnaud> GNAT.Sockets.Constants to also encompass non-socket-related
Arnaud> operating system magic constants.  Runtime unit
Arnaud> GNAT.Sockets.Constants is renamed to System.OS_Constants and
Arnaud> augmented with new constant definitions.

This breaks cross-builds by not passing extra flags to the newly built
cross-compiler, such as the location of system includes. I just sent a
patch that fixes it, after discussing this issue with Thomas.

  Sam
-- 
Samuel Tardieu -- sam@rfc1149.net -- http://www.rfc1149.net/