The inter-unit inlining done by the compiler requires a dedicated machinery
to deal with the public status of library-level entities, since it breaks
the private/plublic semantic barrier of the language.

This is a minor cleanup to this machinery, no functional changes.

Tested on x86_64-pc-linux-gnu, committed on trunk

2017-09-06  Eric Botcazou  <ebotcazou@adacore.com>

	* sem_ch7.adb (Has_Referencer): Move up and expand comment
	explaining the test used to detect inlining.  Use same test
	in second occurrence.
	(Analyze_Package_Body_Helper): Minor formatting fixes.