#1652 handle some malform xml that not properly encode the quote

[Anon Sricharoenchai]

Should we handle some malform xml that not properly encode the quote?

The current behavior of Cimom::unescapeXml() look like these,

<xml>xxx"xxx</xml> --> xxx"xxx
<xml>xxx&quot;xxx</xml> --> xxx\"xxx

Should we handle the first case like the following?,

<xml>xxx"xxx</xml> --> xxx\"xxx