2008-08-04  Kevin Pouget  <pouget@adacore.com>

	* snames.h, snames.adb, snames.ads:
	Add Attr_To_Any, Attr_From_Any and Attr_TypeCode defines.

	* exp_dist.ads, exp_dist.adb: Add Build_From_Any_Call,
	Build_To_Any_Call and Build_TypeCode_Call procedures.

	* exp_attr.adb, sem_attr.adb: Add corresponding cases.

	* rtsfind.ads: Add corresponding names.

	* tbuild.adb: Update prefix restrictions to allow '_' character.

From-SVN: r138598