2017-11-09  Javier Miranda  <miranda@adacore.com>

	* rtsfind.ads (RE_Id, RE_Unit_Table): Add RE_HT_Link.
	* exp_disp.adb (Make_DT): Initialize the HT_Link field of the TSD only
	if available.

2017-11-09  Bob Duff  <duff@adacore.com>

	* exp_ch4.adb, exp_ch9.adb, exp_prag.adb, par-ch3.adb, sem_aggr.adb,
	sem_ch12.adb, sem_ch13.adb, sem_ch4.adb, sem_disp.adb, sem_prag.adb,
	sem_res.adb, sem_util.adb: Get rid of warnings about uninitialized
	variables.

From-SVN: r254577