This patch allows for external tools that utilize the front end abstract syntax
tree to querry for pragma Constant_After_Elaboration in the N_Contract node of
a variable. No change in behavior, no need for a test.
Tested on x86_64-pc-linux-gnu, committed on trunk
2015-10-20 Hristian Kirtchev
This patch implements the legality rules of pragma Constant_After_Elaboration:
The Boolean aspect Constant_After_Elaboration may be specified as part of
the declaration of a library level variable.
The semantic checks of this annotation cannot be performed by the compiler as
this requires f