Add wxIntegerValidator and wxFloatingPointValidator classes.

Add validators for integer and floating point numbers.

Add an example of their use to the validate sample as well as a new unit test
and documentation for them.

Use the new classes instead of wxTextValidator in wxGrid code.

Closes #12166.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66714 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/test_vc9_test_gui.vcproj

@@ -1140,6 +1140,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\validators\valnum.cpp"
+				>
+			</File>
+			<File
 				RelativePath=".\controls\virtlistctrltest.cpp"
 				>
 			</File>