Merge branch 'fm/shell-path-whitespace' into maint
authorJeff King <peff@peff.net>
Tue, 1 Dec 2015 22:19:37 +0000 (17:19 -0500)
committerJeff King <peff@peff.net>
Tue, 1 Dec 2015 22:19:37 +0000 (17:19 -0500)
Portability fix for Windows, which may rewrite $SHELL variable using
non-POSIX paths.

* fm/shell-path-whitespace:
rebase-i-exec: Allow space in SHELL_PATH

Trivial merge