Added regedit unit test, a couple minor changes to regedit.

diff --git a/configure.ac b/configure.ac
index 7bf712e..5a89e55 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1213,6 +1213,7 @@
 WINE_CONFIG_EXTRA_DIR(msdos)
 WINE_CONFIG_EXTRA_DIR(objects)
 WINE_CONFIG_EXTRA_DIR(programs/regapi/tests)
+WINE_CONFIG_EXTRA_DIR(programs/regedit/tests)
 WINE_CONFIG_EXTRA_DIR(programs/winetest/tests)
 WINE_CONFIG_EXTRA_DIR(relay32)
 WINE_CONFIG_EXTRA_DIR(scheduler)