Migrate remaining compiler code to from std::map to Swiss tables.

This cl hit an issue during the shared library cmake build from ODR violations, leading to mismatched absl hash seeds.  The problem was pre-existing but didn't manifest until now, and can be traced to the fact that in shared library builds we linked Abseil statically.  All of the cmake changes here remove the underlying ODR violation.

PiperOrigin-RevId: 485787671

cmake/tests.cmake

diff --git a/cmake/tests.cmake b/cmake/tests.cmake
index 530a66b..57d4174 100644
--- a/cmake/tests.cmake
+++ b/cmake/tests.cmake
@@ -50,6 +50,7 @@
   ${protobuf_test_protos_files}
   ${compiler_test_protos_files}
   ${util_test_protos_files}
+  ${lite_test_protos}
 )
 
 macro(compile_proto_file filename)
@@ -77,12 +78,6 @@
   set(tests_proto_files ${tests_proto_files} ${pb_src} ${pb_hdr})
 endforeach(proto_file)
 
-add_library(protobuf-lite-test-common STATIC
-  ${lite_test_util_srcs} ${lite_test_proto_files})
-target_include_directories(protobuf-lite-test-common PRIVATE ${ABSL_ROOT_DIR})
-target_link_libraries(protobuf-lite-test-common
-  ${protobuf_LIB_PROTOBUF_LITE} ${protobuf_ABSL_USED_TARGETS} GTest::gmock)
-
 set(common_test_files
   ${test_util_hdrs}
   ${test_util_srcs}
@@ -90,12 +85,6 @@
   ${common_test_srcs}
 )
 
-add_library(protobuf-test-common STATIC
-  ${common_test_files} ${tests_proto_files})
-target_include_directories(protobuf-test-common PRIVATE ${ABSL_ROOT_DIR})
-target_link_libraries(protobuf-test-common
-  ${protobuf_LIB_PROTOBUF} ${protobuf_ABSL_USED_TARGETS} GTest::gmock)
-
 set(tests_files
   ${protobuf_test_files}
   ${compiler_test_files}
@@ -129,13 +118,22 @@
   set(protobuf_GTEST_ARGS)
 endif()
 
-add_executable(tests ${tests_files})
+add_executable(tests
+  ${tests_files}
+  ${common_test_files}
+  ${tests_proto_files}
+)
 if (MSVC)
   target_compile_options(tests PRIVATE
     /wd4146 # unary minus operator applied to unsigned type, result still unsigned
   )
 endif()
-target_link_libraries(tests protobuf-lite-test-common protobuf-test-common ${protobuf_LIB_PROTOC} ${protobuf_LIB_PROTOBUF} GTest::gmock_main)
+target_link_libraries(tests
+  ${protobuf_LIB_PROTOC}
+  ${protobuf_LIB_PROTOBUF}
+  ${protobuf_ABSL_USED_TARGETS}
+  GTest::gmock_main
+)
 
 set(test_plugin_files
   ${test_plugin_files}
@@ -152,8 +150,16 @@
   GTest::gmock
 )
 
-add_executable(lite-test ${protobuf_lite_test_files})
-target_link_libraries(lite-test protobuf-lite-test-common ${protobuf_LIB_PROTOBUF_LITE} GTest::gmock_main)
+add_executable(lite-test
+  ${protobuf_lite_test_files}
+  ${lite_test_util_srcs}
+  ${lite_test_proto_files}
+)
+target_link_libraries(lite-test
+  ${protobuf_LIB_PROTOBUF_LITE}
+  ${protobuf_ABSL_USED_TARGETS}
+  GTest::gmock_main
+)
 
 add_test(NAME lite-test
   COMMAND lite-test ${protobuf_GTEST_ARGS})