Improve the ability to use MS Windows keystore for the web servers ssl connector

It is possible to configure the web ssl connector to use the Windows certificate keystore (access provided by the SunMSCAPI provider). However, the JSSESocketFactory checks for a keystore file. This check should likely be skipped when the connector is configured to use the Windows keystore.

Here is what the configuration looks like:

<connector name="https" protocol="HTTP/1.1" scheme="https" socket-binding="https" secure="true">
				 <ssl name="https" 
					key-alias="jbossweb" 
					keystore-type="Windows-MY"
					protocol="TLSv1"
			</connector>

This results in an error like this:
13:54:01,821 ERROR [org.apache.coyote.http11] (MSC service thread 1-5) JBWEB003043: Error initializing endpoint: java.io.FileNotFoundException: C:\Users\imauser\.keystore (The system cannot find the file specified)

You can work around this issue by creating this keystore (C:\Users\imauser\.keystore).

More info on using the Windows keystores can be found here:
http://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#SunMSCAPI
http://www.oracle.com/technetwork/articles/javase/security-137537.html