Fix TAP tests and MSVC scripts for pathnames with spaces.
Change assorted places in our Perl code that did things like
system("prog $path/file");
to do it more like
system('prog', "$path/file");
which is safe against spaces and other special characters in the path
variable. The latter was already the prevailing style, but a few bits
of code hadn't gotten this memo. Back-patch to 9.4 as relevant.
Michael Paquier, Kyotaro Horiguchi
Discussion: <
20160704.160213.
111134711.horiguchi.kyotaro@lab.ntt.co.jp>