add "equo database vacuum"

This tool is useful to shrink the client repository database by
removing SQL indexes. Comes to help on ISO images creation

client/equo.py

@@ -205,6 +205,7 @@ myopts = [
     None,
     (1,'database',1,_('handles installed packages database')),
         (2,'check',2,_('check System Database for errors')),
+        (2,'vacuum',2,_('remove System Database internal indexes to save space')),
         (2,'generate',1,'generate installed packages database using Portage database (Portage needed)'),
         (2,'resurrect',1,_('generate installed packages database using files on the system [last hope]')),
         (2,'depends',2,_('regenerate depends caching table')),

client/text_rescue.py

@@ -658,6 +658,18 @@ def database(options):
             return 0
         return 1
 
+    elif (options[0] == "vacuum"):
+
+        if Equo.clientDbconn != None:
+            print_info(red(" @@ ")+"%s..." % (blue(_("Vacuum cleaning System Database")),), back = True)
+            Equo.clientDbconn.dropAllIndexes()
+            Equo.clientDbconn.vacuum()
+            Equo.clientDbconn.commitChanges()
+            print_info(red(" @@ ")+"%s." % (brown(_("Vacuum cleaned System Database")),))
+            return 0
+        print_warning(darkred(" !!! ")+blue("%s." % (_("No System Databases found"),)))
+        return 1
+
     else:
         return -10