2017-01-23  Hristian Kirtchev  <kirtchev@adacore.com>

	* ghost.ads, ghost.adb (Is_Ignored_Ghost_Unit): New routine.
	* gnat1drv.adb Generate an empty object file for an ignored
	Ghost compilation unit.
	* inline.adb, sem_util.adb, sem_ch4.adb: Minor reformatting.

From-SVN: r244808