Hack truly final fix for MSVC 'stof'
Hack truly final fix for MSVC 'stof'

The rewritten version after git threw away the first draft managed
to mess up balancing parentheses on the Windows #if branch, which
could not be tested before pushing the merge, in order to pull
again on Windows.  THIS version should be truly, finally, good.

che2/bde,bloomberg/bde,bloomberg/bde,bloomberg/bde,bloomberg/bde,bloomberg/bde,che2/bde,che2/bde,che2/bde