undf: assign UNDF numbers, stamp patches; 875 total

defects/redmine/patch/redmine-0001-issue-blocks-bfs-array.patch

@@ -0,0 +1,24 @@
+--- a/app/models/issue.rb
++++ b/app/models/issue.rb
+@@ -1332,15 +1332,16 @@
+   # Returns true if this issue blocks the other issue, otherwise returns false
+   def blocks?(other)
+-    all = [self]
++    all = Set.new([self])	# Use Set for O(1) membership instead of Array O(N)
+     last = [self]
+     while last.any?
+       current =
+         last.map do |i|
+           i.relations_from.where(:relation_type => IssueRelation::TYPE_BLOCKS).map(&:issue_to)
+         end.flatten.uniq
+-      current -= last
+-      current -= all
++      current.reject! { |c| all.include?(c) }	# O(1) per element with Set
+       return true if current.include?(other)
+
+       last = current
+-      all += last
++      all.merge(last)
+     end
+     false
+   end

defects/redmine/patch/redmine-0002-issue-would_reschedule-bfs-array.patch

@@ -0,0 +1,25 @@
+--- a/app/models/issue.rb
++++ b/app/models/issue.rb
+@@ -1352,7 +1352,7 @@
+   # Returns true if the other issue might be rescheduled if the start/due dates of this issue change
+   def would_reschedule?(other)
+-    all = [self]
++    all = Set.new([self])	# Use Set for O(1) membership instead of Array O(N)
+     last = [self]
+     while last.any?
+       current = last.map do |i|
+@@ -1360,10 +1360,9 @@
+         i.leaves.to_a +
+         i.ancestors.map {|a| a.relations_from.where(:relation_type => IssueRelation::TYPE_PRECEDES).map(&:issue_to)}
+       end.flatten.uniq
+-      current -= last
+-      current -= all
++      current.reject! { |c| all.include?(c) }	# O(1) per element with Set
+       return true if current.include?(other)
+
+       last = current
+-      all += last
++      all.merge(last)
+     end
+     false
+   end