[PATCH] [obj2yaml] Support ELF input format in the obj2yaml tool

[Michael Spencer]

With that change this looks good to me.

================
Comment at: test/Object/obj2yaml.test:203
@@ +202,3 @@
+ELF-MIPSEL-NEXT:     AddressAlign:    0x0000000000000004
+ELF-MIPSEL-NEXT:     Content:         0000023C00004224E8FFBD271400BFAF1000B0AF218059000000018E000024240000198E09F8200321E000020000198E09F8200321E00002000002241000B08F1400BF8F0800E0031800BD27
+ELF-MIPSEL-NEXT:   - Type:            SHT_REL
----------------
Content needs to be quoted. 0 is the octal prefix in YAML prior to 1.2.

http://reviews.llvm.org/D3636