snappy ver. bump

system/base/snappy/files/snappy-thirdparty.patch

@@ -0,0 +1,48 @@
+diff -r efdeda5cdfa2 CMakeLists.txt
+--- a/CMakeLists.txt	Sat May 15 14:50:17 2021 +0200
++++ b/CMakeLists.txt	Sat May 15 14:54:41 2021 +0200
+@@ -284,29 +284,12 @@
+ if(SNAPPY_BUILD_TESTS)
+   enable_testing()
+ 
+-  # Prevent overriding the parent project's compiler/linker settings on Windows.
+-  set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+-  set(install_gtest OFF)
+-  set(install_gmock OFF)
+-  set(build_gmock ON)
+-
+-  # This project is tested using GoogleTest.
+-  add_subdirectory("third_party/googletest")
+-
+-  # GoogleTest triggers a missing field initializers warning.
+-  if(SNAPPY_HAVE_NO_MISSING_FIELD_INITIALIZERS)
+-    set_property(TARGET gtest
+-        APPEND PROPERTY COMPILE_OPTIONS -Wno-missing-field-initializers)
+-    set_property(TARGET gmock
+-        APPEND PROPERTY COMPILE_OPTIONS -Wno-missing-field-initializers)
+-  endif(SNAPPY_HAVE_NO_MISSING_FIELD_INITIALIZERS)
+-
+   add_executable(snappy_unittest "")
+   target_sources(snappy_unittest
+     PRIVATE
+       "snappy_unittest.cc"
+   )
+-  target_link_libraries(snappy_unittest snappy_test_support gmock_main gtest)
++  target_link_libraries(snappy_unittest snappy_test_support gtest_main gtest)
+ 
+   add_test(
+     NAME snappy_unittest
+@@ -327,12 +310,11 @@
+     PRIVATE
+       "snappy_benchmark.cc"
+   )
+-  target_link_libraries(snappy_benchmark snappy_test_support benchmark_main)
++  target_link_libraries(snappy_benchmark snappy_test_support benchmark_main benchmark)
+ 
+   # This project uses Google benchmark for benchmarking.
+   set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
+   set(BENCHMARK_ENABLE_EXCEPTIONS OFF CACHE BOOL "" FORCE)
+-  add_subdirectory("third_party/benchmark")
+ endif(SNAPPY_BUILD_BENCHMARKS)
+ 
+ if(SNAPPY_FUZZING_BUILD)