Added new has_bits.h file to cmake/extract_includes.bat.in (#2152)
This is necessary so that the CMake build knows to include this header
file in the installation include/ directory.
diff --git a/cmake/extract_includes.bat.in b/cmake/extract_includes.bat.in
index 0f28638..abd7061 100644
--- a/cmake/extract_includes.bat.in
+++ b/cmake/extract_includes.bat.in
@@ -49,6 +49,7 @@
copy ${PROTOBUF_SOURCE_WIN32_PATH}\..\src\google\protobuf\generated_enum_util.h include\google\protobuf\generated_enum_util.h
copy ${PROTOBUF_SOURCE_WIN32_PATH}\..\src\google\protobuf\generated_message_reflection.h include\google\protobuf\generated_message_reflection.h
copy ${PROTOBUF_SOURCE_WIN32_PATH}\..\src\google\protobuf\generated_message_util.h include\google\protobuf\generated_message_util.h
+copy ${PROTOBUF_SOURCE_WIN32_PATH}\..\src\google\protobuf\has_bits.h include\google\protobuf\has_bits.h
copy ${PROTOBUF_SOURCE_WIN32_PATH}\..\src\google\protobuf\io\coded_stream.h include\google\protobuf\io\coded_stream.h
copy ${PROTOBUF_SOURCE_WIN32_PATH}\..\src\google\protobuf\io\gzip_stream.h include\google\protobuf\io\gzip_stream.h
copy ${PROTOBUF_SOURCE_WIN32_PATH}\..\src\google\protobuf\io\printer.h include\google\protobuf\io\printer.h
