[aur-general] [rename request] weka

[GSC]

https://aur.archlinux.org/packages/weka/
It should use the latest stable version 3.6.11, instead of current 3.7 
branch.
Current weka should be renamed to something like weka-devel. Although a 
previous maintainer states that " The difference between stable and 
development upstream is pointless, there is no reason not to be using 
this branch." , there still exist users who want to use a stable 
package. So a rename is necessary to clarify.
And if possible, orphan it as well, several packages of the maintainer 
are out of date.