makepkg-git: use the correct git.exe for makepkg

Now that we are adding support for the i686 flavor of the `makepkg-git`
SDK artifact, we need to ensure that its `/usr/bin/git` (which is only a
script in that SDK artifact, handing off to the MINGW version of
`git.exe`) calls a `git.exe` that actually exists.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

please.sh

@@ -3552,7 +3552,8 @@ create_sdk_artifact () { # [--out=<directory>] [--git-sdk=<directory>] [--bitnes
 	fi &&
 	if test makepkg-git = $mode && test ! -x "$output_path/usr/bin/git"
 	then
-		printf '#!/bin/sh\n\nexec /mingw64/bin/git.exe "$@"\n' >"$output_path/usr/bin/git"
+		printf '#!/bin/sh\n\nexec %s/bin/git.exe "$@"\n' \
+			"/mingw$bitness" >"$output_path/usr/bin/git"
 	fi &&
 	if test makepkg-git = $mode && ! grep -q http://docbook.sourceforge.net/release/xsl-ns/current "$output_path/etc/xml/catalog"
 	then