Chris Jefferson noted that vector iterator ownership can be transferred from source to target under move construction and move assignment.  This commit makes that happen for debug mode.
Chris Jefferson noted that vector iterator ownership can be transferred from source to target under move construction and move assignment.  This commit makes that happen for debug mode.

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@140023 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx