Adopt commit 26fe386 from master: Merge pull request #669 from bchapman/bsls_nameof-enhance-thread-safety-drqs-88322166
Adopt commit 26fe386 from master: Merge pull request #669 from bchapman/bsls_nameof-enhance-thread-safety-drqs-88322166

commit 26fe38648bf66bcc293d434bfe8e0aeb751d492a
Merge: 72c4f5d 1287e0f
Author: Henry Verschell <hverschell@bloomberg.net>
Date:   Thu Sep 8 22:37:19 2016 -0400

    Merge pull request #669 from bchapman/bsls_nameof-enhance-thread-safety-drqs-88322166

    bsls_nameof: enhance thread safety

commit 1287e0fd60540da648d975d5dad9ef625b40ca02
Author: Bill Chapman <bchapman2@bloomberg.net>
Date:   Fri Sep 2 17:08:41 2016 -0400

    bsls_nameof: enhance thread safety

apaprocki/bde,bloomberg/bde,bowlofstew/bde,che2/bde,apaprocki/bde,che2/bde,dharesign/bde,apaprocki/bde,bowlofstew/bde,dharesign/bde,bloomberg/bde,bowlofstew/bde,che2/bde,che2/bde,bowlofstew/bde,apaprocki/bde,dharesign/bde,dharesign/bde,bloomberg/bde,apaprocki/bde,bloomberg/bde,bloomberg/bde