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

examples/cpp/mps_driver.cc

@@ -17,6 +17,7 @@
 #include <stdio.h>
 #include <string>
 
+#include "absl/strings/match.h"
 #include "google/protobuf/descriptor.h"
 #include "google/protobuf/message.h"
 #include "google/protobuf/text_format.h"
@@ -24,14 +25,13 @@
 #include "ortools/base/file.h"
 #include "ortools/base/logging.h"
 #include "ortools/base/status.h"
-#include "ortools/base/stringpiece_utils.h"
-#include "ortools/base/strutil.h"
 #include "ortools/base/timer.h"
 #include "ortools/glop/lp_solver.h"
 #include "ortools/glop/parameters.pb.h"
 #include "ortools/lp_data/lp_print_utils.h"
 #include "ortools/lp_data/mps_reader.h"
 #include "ortools/lp_data/proto_utils.h"
+#include "ortools/util/file_util.h"
 #include "ortools/util/proto_tools.h"
 
 DEFINE_bool(mps_dump_problem, false, "Dumps problem in readable form.");
@@ -50,6 +50,7 @@ DEFINE_string(params, "",
 
 using google::protobuf::TextFormat;
 using operations_research::FullProtocolMessageAsString;
+using operations_research::ReadFileToProto;
 using operations_research::glop::GetProblemStatusString;
 using operations_research::glop::GlopParameters;
 using operations_research::glop::LinearProgram;
@@ -63,7 +64,9 @@ using operations_research::glop::ToDouble;
 void ReadGlopParameters(GlopParameters* parameters) {
   if (!FLAGS_params_file.empty()) {
     std::string params;
-    CHECK(TextFormat::ParseFromString(params, parameters)) << params;
+    CHECK_OK(file::GetContents(FLAGS_params_file, &params, file::Defaults()));
+    CHECK(TextFormat::MergeFromString(params, parameters))
+        << FLAGS_params;
   }
   if (!FLAGS_params.empty()) {
     CHECK(TextFormat::MergeFromString(FLAGS_params, parameters))
@@ -89,15 +92,15 @@ int main(int argc, char* argv[]) {
     const std::string& file_name = file_list[i];
     MPSReader mps_reader;
     operations_research::MPModelProto model_proto;
-    if (strings::EndsWith(file_name, ".mps") ||
-        strings::EndsWith(file_name, ".mps.gz")) {
+    if (absl::EndsWith(file_name, ".mps") ||
+        absl::EndsWith(file_name, ".mps.gz")) {
       if (!mps_reader.LoadFileAndTryFreeFormOnFail(file_name,
                                                    &linear_program)) {
         LOG(INFO) << "Parse error for " << file_name;
         continue;
       }
     } else {
-      file::ReadFileToProto(file_name, &model_proto);
+      ReadFileToProto(file_name, &model_proto);
       MPModelProtoToLinearProgram(model_proto, &linear_program);
     }
     if (FLAGS_mps_dump_problem) {