Remove some weird code around opal_db_close and cleanup that framework's open/close operation

This commit was SVN r28298.

opal/mca/db/base/Makefile.am

@@ -14,7 +14,6 @@ headers += \
 	base/base.h
 
 libmca_db_la_SOURCES += \
-	base/db_base_open.c \
-	base/db_base_close.c \
+	base/db_base_frame.c \
 	base/db_base_select.c \
         base/db_base_fns.c

opal/mca/db/base/db_base_frame.c

@@ -41,8 +41,14 @@ opal_db_base_module_t opal_db = {
 };
 opal_db_base_t opal_db_base;
 
-/* Declared in opal_db_close.c */
-int opal_db_base_close(void);
+static int opal_db_base_close(void)
+{
+    if (NULL != opal_db.finalize) {
+        opal_db.finalize();
+    }
+
+    return mca_base_framework_components_close(&opal_db_base_framework, NULL);
+}
 
 static int opal_db_base_open(mca_base_open_flag_t flags)
 {