sdk-installer: configure the MSYS2 runtime correctly

... even before git-extra was installed. This trick is performed simply
by bundling the /etc/nsswitch.conf file that tells MSYS2's runtime e.g.
to use the fast route to determining the home directory. This makes a
huge difference, say, when running on a domain-joined machine that
temporarily cannot reach its domain controller. A >60 second kind of
difference.

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

Author: dscho

sdk-installer/release.sh

@@ -70,7 +70,8 @@ dlls_for_exes () {
 	echo "$dlls"
 }
 
-fileList="etc/pacman.conf \
+fileList="etc/nsswitch.conf \
+	etc/pacman.conf \
 	etc/pacman.d \
 	usr/bin/pacman.exe \
 	usr/bin/curl.exe \