Allow specifying textured-backround in the tiapp.xml.
Allow specifying textured-backround in the tiapp.xml.

This brings this property in line with other tiapp.xml
window properties.

wyrover/titanium_desktop,appcelerator/titanium_desktop,jvkops/titanium_desktop,appcelerator/titanium_desktop,appcelerator/titanium_desktop,jvkops/titanium_desktop,appcelerator/titanium_desktop,jvkops/titanium_desktop,wyrover/titanium_desktop,wyrover/titanium_desktop,wyrover/titanium_desktop,wyrover/titanium_desktop,wyrover/titanium_desktop,jvkops/titanium_desktop,jvkops/titanium_desktop,appcelerator/titanium_desktop,jvkops/titanium_desktop