Add another table to store linked_revs

We need to create fake revisions when packages were touched that are
linked themselves

lib/tree_builder.py

@@ -12,14 +12,15 @@ class TreeBuilder:
         ret = []
         prev = None
         for rev in revisions:
-            if rev.broken: continue
+            print(rev, rev.files_hash(self.db))
+            if rev.broken:
+                continue
             if prev and prev.files_hash(self.db) == rev.files_hash(self.db):
                 continue
             ret.append(rev)
             prev = rev
         return ret
 
-
     def build(self, package):
         factory_revisions = self.filtered_revisions("openSUSE:Factory", package)
         source_revisions = dict()