Introduce hsdump development tool for producing information during compilation.

This tool is intended to assist Hyperscan developers with development and
debugging by providing insights into the generated bytecode.

tools/hsdump/CMakeLists.txt

@@ -0,0 +1,19 @@
+# dump support is required
+if (NOT DUMP_SUPPORT)
+    return()
+endif ()
+
+if (WIN32)
+    return()
+endif ()
+
+include_directories(${PROJECT_SOURCE_DIR})
+include_directories(${PROJECT_SOURCE_DIR}/util)
+
+# only set these after all tests are done
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_C_FLAGS}")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EXTRA_CXX_FLAGS}")
+
+add_executable(hsdump main.cpp)
+target_link_libraries(hsdump hs expressionutil crosscompileutil)
+