all.bash: allow spaces in $GOTOOLDIR to print build info

For consistency with all.bat: "%GOTOOLDIR%/dist" banner

Fixes #66061

Change-Id: I3387003a77a5fe82fe132e7aba472b06dd9068f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/570395
Auto-Submit: Ian Lance Taylor <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>

Author: callthingsoff

src/all.bash

@@ -10,4 +10,4 @@ if [ ! -f make.bash ]; then
 fi
 . ./make.bash "$@" --no-banner
 bash run.bash --no-rebuild
-$GOTOOLDIR/dist banner  # print build info
+"$GOTOOLDIR/dist" banner  # print build info