[PATCH] First step towards PR21189 -- Teach llvm-readobj to dump bits of COFF symbol subsections required to debug using VS2012+

[Nico Rieck]

As a rule of thumb: Use DictScope for key-value pairs. Usually there's only a fixed amount of these per scope, like a single symbol info. Use ListScope if you want to delimit a list of things. Usually there's a loop printing the contents, and the amount is not fixed, like a list of symbols or sections. HTH!

http://reviews.llvm.org/D5755