Merge pull request #7302
3968922 c++11: fix libbdb build against libc++ in c++11 mode (Cory Fields)
57d2f62 c++11: CAccountingEntry must be defined before use in a list (Cory Fields)
89f71c6 c++11: don't throw from the reverselock destructor (Cory Fields)
76ac35f c++11: detect and correct for boost builds with an incompatible abi (Cory Fields)