[PATCH] ELFObjectWriter: optimize suffices in strtab

[Sean Silva]

Please cross-reference this from the TODO above StringTableBuilder in tools/yaml2obj/yaml2elf.h

================
Comment at: include/llvm/ADT/StringTableBuilder.h:18-19
@@ +17,4 @@
+namespace llvm {
+
+class StringTableBuilder {
+  SmallString<256> StringTable;
----------------
Please add a class comment indicating that this is primarily a convenience for doing suffix deduplication.

http://reviews.llvm.org/D3533