Make sure we have physical path back from mktemp

Darwin actually symlinks /var inside /private, but mktemp reports back
the logical pathat time of file creation.  So make sure we always get
the full physical path to be absolutely certain when doing comparisons
later, because thats how the Ruby status_shortcuts.rb script is going to
obtain them.

test/lib/git/shell_shortcuts_test.sh

@@ -71,7 +71,15 @@ test_ls_with_file_shortcuts() {
   export git_env_char="e"
 
   TEST_DIR=$(mktemp -d -t scm_breeze.XXXXXXXXXX)
+
+  # Darwin actually symlinks /var inside /private, but mktemp reports back the
+  # logical pathat time of file creation.  So make sure we always get the
+  # full physical path to be absolutely certain when doing comparisons later,
+  # because thats how the Ruby status_shortcuts.rb script is going to obtain
+  # them.
   cd $TEST_DIR
+  TEST_DIR=`pwd -P`
+
   touch 'test file' 'test_file'
   mkdir -p "a [b]" 'a "b"' "a 'b'"
   touch "a \"b\"/c"