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/lib/webview/CMakeLists.txt

@@ -0,0 +1,38 @@
+#############################################################################
+# Name:        build/cmake/lib/webview/CMakeLists.txt
+# Purpose:     CMake file for webview library
+# Author:      Tobias Taschner
+# Created:     2016-10-03
+# Copyright:   (c) 2016 wxWidgets development team
+# Licence:     wxWindows licence
+#############################################################################
+
+include(../../source_groups.cmake)
+
+wx_append_sources(WEBVIEW_FILES WEBVIEW_CMN)
+
+if(WXMSW)
+    wx_append_sources(WEBVIEW_FILES WEBVIEW_MSW)
+elseif(WXGTK)
+    wx_append_sources(WEBVIEW_FILES WEBVIEW_GTK)
+elseif(APPLE)
+    wx_append_sources(WEBVIEW_FILES WEBVIEW_OSX_SHARED)
+endif()
+
+wx_add_library(webview ${WEBVIEW_FILES})
+if(APPLE)
+    wx_lib_link_libraries(webview PUBLIC
+        "-framework WebKit"
+        )
+elseif(WXGTK)
+    wx_lib_include_directories(webview PUBLIC
+        ${WEBKIT_INCLUDE_DIR}
+        ${LIBSOUP_INCLUDE_DIRS}
+        )
+    wx_lib_link_libraries(webview PUBLIC
+        ${WEBKIT_LIBRARIES}
+        ${LIBSOUP_LIBRARIES}
+        )
+endif()
+
+wx_finalize_lib(webview)