exewrapper: format with clang-format
A few *s move around, some spaces around parens, a couple of
braces. Nothing remarkable.
Differential Revision: https://phab.mercurial-scm.org/D1032
Greg Ward, author of the original bfiles extension
Na'Tosha Bard of Unity Technologies
Fog Creek Software
Special thanks to the University of Toronto and the UCOSP program