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/update-setup-h

@@ -39,6 +39,11 @@ cat_common_options_for()
         cmd="$cmd | sed -e '/^\/\//d' \
                         -e 's@ *//.*\$@@' \
                         -e 's/# *define \(.\+\) \+1 *\$/#define \1 0/'"
+    elif [ $2 = "build/cmake/setup.h.in" ]; then
+        # The setup.h.in template for cmake needs special processing
+        cmd="$cmd | sed -e '/^\/\//d' \
+                        -e 's@ *//.*\$@@' \
+                        -e 's/# *define \(.\+\) \+\(1\|0\) *\$/#cmakedefine01 \1/'"
     fi
 
     eval $cmd
@@ -97,10 +102,12 @@ update_common_setup_h include/wx/gtk/setup0.h
 update_common_setup_h include/wx/osx/setup0.h
 update_common_setup_h include/wx/univ/setup0.h
 update_common_setup_h setup.h.in
+update_common_setup_h build/cmake/setup.h.in
 
 update_msw_setup_h include/wx/msw/setup0.h
 update_msw_setup_h include/wx/gtk/setup0.h
 update_msw_setup_h setup.h.in
+update_msw_setup_h build/cmake/setup.h.in
 
 update_single_setup_h wxUniv include/wx/univ/setup_inc.h include/wx/univ/setup0.h