Merge pull request #5509
7f991e3 c++11: These look like user-defined literals. (Cory Fields)
5a6155c c++11: don't forward-declare types used in maps (Cory Fields)
3447cf8 c++11: MOVEONLY: break circular dependency in wallet (Cory Fields)
bbacd88 c++11: MOVEONLY: move function definitions out of the header (Cory Fields)
a2b04dd build: fix newer boost build with c++11 (Cory Fields)