Introduce 'library' attribute for the ace:graphicImage component. Use 'name' and 'library' whenever the 'value' or 'url' attributes are not defined to lookup the resource request path.

I believe there was some confusion what the 'name' attribute was for when the sugestion was made to add the library attribute to the ace:graphicImage component.
Previous to my changes the 'name' attribute was used for defining the name of the file in the URL that was generated off a byte array.
The change I put in unfortunately overloads the 'name' attribute, now whenever the 'value' or 'url' attributes are not defined the 'name' and the 'library' attributes are used for looking up a JSF resource, just like h:graphicImage does.

The Javadoc for the 'name' attribute was updated to clarify new overloaded behaviour.

Verified ICEfaces 4 trunk r51657, Tomcat 8, MS Edge, IE 11, 10, 9, 8, FF 47, Chrome 59.
Added test app /ICE-11317.jsf to
http://dev.icesoft.com/svn/repo/qa/trunk/Regression-Icefaces4/Sparkle/Nightly/graphicImage

I had to change the text a bit:

"If the 'value', 'url' or 'src' attributes are defined the 'name' attribute defines the file name for the graphic image. Alternatively, a value can be specified to reference a JSF resource (also requires the 'library' attribute to be specified)."