Backport D106924 "[Preprocessor] -E -P: Ensure newline after 8 skipped lines" into clang-13.0.0.0

[Meinersbur]

Bugzilla Link	51261
Resolution	WONTFIX
Resolved on	Aug 01, 2021 17:14
Version	unspecified
OS	Windows NT
CC	@mstorsjo,@zygoloid,@tstellar
Fixed by commit(s)	c6b0b16

Extended Description

This fix after D104601 that has been committed before the clang-13 branch. Backport has also been requested by @​mstorsjo.

[Meinersbur]

• Adding fix for second regression 0e25867
• Superseded by llvm/llvm-bugzilla-archive#51300 (Revert the -fminimize-whitespace feature on clang-13.x branch as suggested by @​aaron.ballman)
  • Remove from blocking release-13.0.0
  • Change status to RESOLVED -> WON'T FIX