Allow WebVerifyXXXX functions to verify for an array of strings
When WebVerifyXXXX (e.g. WebVerifyDataBoundEx) functions are used, only one verify string can be specified. There are many cases when two or more possible values can be valid. Allowing sVerify string to be optionally an array of strings would make the functions very useful. For now, WebParseDataBoundEx has to be used and check for the possible values.