Add CMake build system

Add CMake build system for libraries, tests and samples
update_files.py converts build/files into CMake format.
build/update-setup-h has been modified to update build/cmake/setup.h.in.

build/cmake/utils/CMakeLists.txt

@@ -0,0 +1,21 @@
+#############################################################################
+# Name:        build/cmake/utils/CMakeLists.txt
+# Purpose:     CMake script for utilities
+# Author:      Tobias Taschner
+# Created:     2016-10-21
+# Copyright:   (c) 2016 wxWidgets development team
+# Licence:     wxWindows licence
+#############################################################################
+
+if(wxUSE_XRC)
+    add_executable(wxrc "${wxSOURCE_DIR}/utils/wxrc/wxrc.cpp")
+    wx_set_common_target_properties(wxrc)
+    if(wxBUILD_SHARED)
+        target_compile_definitions(wxrc PRIVATE WXUSINGDLL)
+    endif()
+    wx_exe_link_libraries(wxrc xml base)
+    # TODO: install
+    set_target_properties(wxrc PROPERTIES FOLDER "Utilities")
+endif()
+
+# TODO: build targets for other utils