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/regex.cmake

@@ -0,0 +1,26 @@
+#############################################################################
+# Name:        build/cmake/lib/regex.cmake
+# Purpose:     Use external or internal regex lib
+# Author:      Tobias Taschner
+# Created:     2016-09-25
+# Copyright:   (c) 2016 wxWidgets development team
+# Licence:     wxWindows licence
+#############################################################################
+
+wx_add_thirdparty_library(wxUSE_REGEX REGEX "enable support for wxRegEx class" DEFAULT builtin)
+
+if(wxUSE_REGEX)
+    # TODO: Forcing builtin until sys is implemented
+    set(wxUSE_REGEX builtin)
+    wx_add_builtin_library(wxregex
+        src/regex/regcomp.c
+        src/regex/regexec.c
+        src/regex/regerror.c
+        src/regex/regfree.c
+    )
+    target_include_directories(wxregex PRIVATE ${wxSETUP_HEADER_PATH} ${wxSOURCE_DIR}/include)
+    set(REGEX_LIBRARIES wxregex)
+    set(REGEX_INCLUDE_DIRS ${wxSOURCE_DIR}/src/regex)
+endif()
+
+#TODO: find external lib and include dir