GCC master branch not clean

[H.J. Lu (X86 SPEC CPU)]

On branch master
Your branch is up to date with 'origin/master'.

Untracked files:
  (use "git add <file>..." to include in what will be committed)

	core.10499
	core.1500
	core.16326
	core.19600
	core.20187
	core.20263
	core.20292
	core.21030
	core.21854
	core.28084
	core.4965
	core.5310
	core.5765
	core.5951
	core.5999
	core.6011

nothing added to commit but untracked files present (use "git add" to track)