Merging r279368:

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r279368 | ed | 2016-08-20 03:54:51 -0700 (Sat, 20 Aug 2016) | 12 lines

Add R_386_TLS_LE as a relocation having an implicit addend.

TLS on i386 in non-PIE/PIC code seems broken right now, because we don't
properly add the addend encoded in the instruction to the resulting
offset when processing R_386_TLS_LE relocations.

Extend one of the existing tests for TLS on i686 to use an addend.

PR:		https://llvm.org/bugs/show_bug.cgi?id=29068
Reviewed by:	ruiu
Differential Revision:	https://reviews.llvm.org/D23741

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llvm-svn: 279476