Update meson build system

NOTE: This commit only tested on Linux (Ubuntu 18.04). Windows
build may not work as expected.

* Use meson >= 0.47.0 cause we use install_man function
* Add three helper Python script:
  * CopyFile.py: To copy file
  * CreateSymlink.py: To make symlink (both Windows and Unix)
  * GetZstdLibraryVersion.py: Parse lib/zstd.h to get zstd version
  These help emulating equivalent functions in CMake and Makefile.
* Use subdir from meson to split meson.build
  * Add contrib build
  * Fix other build
* Add new build options
  * build_programs: Enable programs build
  * build_contrib: Enable contrib build
  * build_tests: Enable tests build
  * use_static_runtime: Link to static run-time libraries on MSVC
  * zlib_support: Enable zlib support
  * lzma_support: Enable lzma support

contrib/meson/tests/meson.build

@@ -0,0 +1,65 @@
+# #############################################################################
+# Copyright (c) 2018-present     Dima Krasner <dima@dimakrasner.com>
+#                                lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+zstd_source_dir = join_paths('..', '..', '..')
+programs_dir = join_paths(zstd_source_dir, 'programs')
+tests_dir = join_paths(zstd_source_dir, 'tests')
+
+datagen_c_file = join_paths(programs_dir, 'datagen.c')
+util_c_file = join_paths(programs_dir, 'util.c')
+benchfn_c_file = join_paths(programs_dir, 'benchfn.c')
+
+datagen_sources = [datagen_c_file,
+    join_paths(tests_dir, 'datagencli.c')]
+test_includes = libzstd_includes + [include_directories(programs_dir)]
+
+datagen = executable('datagen',
+    datagen_sources,
+    include_directories: test_includes,
+    link_with: libzstd,
+    install: false)
+test('datagen', datagen)
+
+fullbench_sources = [datagen_c_file,
+    util_c_file,
+    benchfn_c_file,
+    join_paths(programs_dir, 'benchzstd.c'),
+    join_paths(programs_dir, 'fullbench.c')]
+fullbench = executable('fullbench',
+    fullbench_sources,
+    include_directories: test_includes,
+    link_with: libzstd,
+    install: false)
+test('fullbench', fullbench)
+
+fuzzer_sources = [datagen_c_file,
+    util_c_file,
+    join_paths(tests_dir, 'fuzzer.c')]
+fuzzer = executable('fuzzer',
+    fuzzer_sources,
+    include_directories: test_includes,
+    link_with: libzstd,
+    install: false)
+test('fuzzer', fuzzer)
+
+paramgrill_sources = [benchfn_c_file
+    join_paths(programs_dir, 'benchzstd.c'),
+    datagen_c_file
+    util_c_file
+    join_paths(tests_dir, 'paramgrill.c')]
+if host_machine.system() != 'windows'
+    paramgrill = executable('paramgrill',
+        paramgrill_sources,
+        include_directories: test_includes,
+        link_with: libzstd,
+        dependencies: libm_dep,
+        install: false )
+    test('paramgrill', paramgrill)
+endif