Support for name/library attributes with h:commandButton

JSF 2.0 specify new name/library attributes for h:graphicImage, h:outputStylesheet and h:outputScript. But current JSF RI implementation supports name/library even on h:commandButton (and maybe others - h:button for example ?). That is very useful feature which allows complex EL like:

<h:commandButton name="#

{resourceBean.fileName}

.#

{extensions.extension}

" library="#

{otherBean.libraryName}

/foo/bar/#

{randomLibraryName}

".

Supporting this hidden feature enables easy migration from RI to myfaces too.