Merge lld r345002 into 7.0.1

[DimitryAndric]

Bugzilla Link	39392
Resolution	FIXED
Resolved on	Oct 31, 2018 10:14
Version	unspecified
OS	All
Blocks	#38454
CC	@rui314,@tstellar
Fixed by commit(s)	r345002 r345739

Extended Description

Please merge https://reviews.llvm.org/rL345002 into lld 7.0.1. This fixes a problem with ifunc related symbols in combination with the --relocatable option.

[rui314]

Approved. That change fixes an obviously bug and should be low-risk to cherry-pick.

[tstellar]

Merged: r345739