merge LRA

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/util/lp/breakpoint.h

@@ -0,0 +1,20 @@
+/*
+  Copyright (c) 2017 Microsoft Corporation
+  Author: Lev Nachmanson
+*/
+
+#pragma once
+
+namespace lean {
+enum breakpoint_type {
+    low_break, upper_break, fixed_break
+};
+template <typename X>
+struct breakpoint {
+    unsigned m_j; // the basic column
+    breakpoint_type m_type;
+    X m_delta;
+    breakpoint(){}
+    breakpoint(unsigned j, X delta, breakpoint_type type):m_j(j), m_type(type), m_delta(delta) {}
+};
+}