dotnet: Remove reference to dotnet release command

- Currently not implemented...

Add abseil patch

- Add patches/absl-config.cmake

Makefile: Add abseil-cpp on unix

- Force abseil-cpp SHA1 to 45221cc
  note: Just before the PR #136 which break all CMake

Makefile: Add abseil-cpp on windows

- Force abseil-cpp SHA1 to 45221cc
  note: Just before the PR #136 which break all CMake

CMake: Add abseil-cpp

- Force abseil-cpp SHA1 to 45221cc
  note: Just before the PR #136 which break all CMake

port to absl: C++ Part

- Fix warning with the use of ABSL_MUST_USE_RESULT
  > The macro must appear as the very first part of a function
    declaration or definition:
    ...
    Note: past advice was to place the macro after the argument list.
  src: dependencies/sources/abseil-cpp-master/absl/base/attributes.h:418
- Rename enum after windows clash
- Remove non compact table constraints
- Change index type from int64 to int in routing library
- Fix file_nonport compilation on windows
- Fix another naming conflict with windows (NO_ERROR is a macro)
- Cleanup hash containers; work on sat internals
- Add optional_boolean sub-proto

Sync cpp examples with internal code
- reenable issue173 after reducing number of loops

port to absl: Python Part

- Add back cp_model.INT32_MIN|MAX for examples

Update Python examples

- Add random_tsp.py
- Run words_square example
- Run magic_square in python tests

port to absl: Java Part

- Fix compilation of the new routing parameters in java
- Protect some code from SWIG parsing

Update Java Examples

port to absl: .Net Part

Update .Net examples

work on sat internals; Add C++ CP-SAT CpModelBuilder API; update sample code and recipes to use the new API; sync with internal code

Remove VS 2015 in Appveyor-CI

- abseil-cpp does not support VS 2015...

improve tables

upgrade C++ sat examples to use the new API; work on sat internals

update license dates

rewrite jobshop_ft06_distance.py to use the CP-SAT solver

rename last example

revert last commit

more work on SAT internals

fix

ortools/constraint_solver/deviation.cc

@@ -17,10 +17,10 @@
 #include <string>
 #include <vector>
 
+#include "absl/strings/str_format.h"
 #include "ortools/base/integral_types.h"
 #include "ortools/base/logging.h"
 #include "ortools/base/mathutil.h"
-#include "ortools/base/stringprintf.h"
 #include "ortools/constraint_solver/constraint_solver.h"
 #include "ortools/util/string_array.h"
 
@@ -71,9 +71,9 @@ class Deviation : public Constraint {
   }
 
   std::string DebugString() const override {
-    return StringPrintf("Deviation([%s], deviation_var = %s, sum = %lld)",
-                        JoinDebugStringPtr(vars_, ", ").c_str(),
-                        deviation_var_->DebugString().c_str(), total_sum_);
+    return absl::StrFormat("Deviation([%s], deviation_var = %s, sum = %d)",
+                           JoinDebugStringPtr(vars_, ", "),
+                           deviation_var_->DebugString(), total_sum_);
   }
 
   void Accept(ModelVisitor* const visitor) const override {