addToolVersion.sh

Dear Reader,

I am using the git version of crosstool-NG and want to add a new kernel. 
However, the above mentioned tool as well as the potential replacement 
gen-versions.sh are nowhere to be found.

I can add things manually in linux.in and in the new chksum file, but 
that seems a bit awkward knowing that there have been (a) tool(s) for 
this purpose.

Suggestion?

Regards, Frans.