[PATCH] [ELF] Emit DT_TEXTREL dynamic table flag

[Rui Ueyama]

LGTM

================
Comment at: lib/ReaderWriter/ELF/SectionChunks.h:959
@@ +958,3 @@
+  bool canModifyReadonlySection() const {
+    for (const auto &rel : _relocs)
+      if ((rel.first->permissions() & DefinedAtom::permRW_) !=
----------------
can you expand "auto"?

================
Comment at: lib/ReaderWriter/ELF/SectionChunks.h:960
@@ +959,3 @@
+    for (const auto &rel : _relocs)
+      if ((rel.first->permissions() & DefinedAtom::permRW_) !=
+          DefinedAtom::permRW_)
----------------
nit: fit in one line

http://reviews.llvm.org/D3716