A user on IRC was reporting a failure case where their server was UNIX and their client was Windows, which appeared to show the plugin bombing on a clone() operation.
A user on IRC was reporting a failure case where their server was UNIX
and their client was Windows, which appeared to show the plugin bombing
on a clone() operation.

Investigation showed that it was probably likely to the machinery that
tries to work out the version number thinking that 2 lines had been
returned, and generating an exception. This could be a CRLF / slave platform
difference, but I cannot recreate it.

Since the entire purpose is simply to work out if git clone supports --progress,
which is a nicety anyway, default to assuming it doesn't support it and
just log an error rather than crashing the entire build.

Signed-off-by: Nigel Magnay <0c422baef524090650d5dc166beb1e8269e8fa23@gmail.com>

sgargan/git-plugin,ldtkms/git-plugin,Jellyvision/git-plugin,sgargan/git-plugin,martinda/git-plugin,jacob-keller/git-plugin,bjacklyn/git-plugin,jenkinsci/git-plugin,jacob-keller/git-plugin,jenkinsci/git-plugin,ialbors/git-plugin,kzantow/git-plugin,bjacklyn/git-plugin,nordstrand/git-plugin,KostyaSha/git-plugin,Nonymus/git-plugin,avdv/git-plugin,martinda/git-plugin,loomchild/git-plugin,kzantow/git-plugin,loomchild/git-plugin,recena/git-plugin,ndeloof/git-plugin,recena/git-plugin,mlgiroux/git-plugin,PinguinAG/git-plugin,ivan-fedorov/git-plugin,ydubreuil/git-plugin,Vlatombe/git-plugin,v1v/git-plugin,MarkEWaite/git-plugin,mklein0/git-plugin,avdv/git-plugin,Nonymus/git-plugin,ydubreuil/git-plugin,PinguinAG/git-plugin,ndeloof/git-plugin,jenkinsci/git-plugin,pauxus/git-plugin,Vlatombe/git-plugin,bjacklyn/git-plugin,ivan-fedorov/git-plugin,kzantow/git-plugin,martinda/git-plugin,nordstrand/git-plugin,Deveo/git-plugin,abaditsegay/git-plugin,Nonymus/git-plugin,v1v/git-plugin,jenkinsci/git-plugin,v1v/git-plugin,Deveo/git-plugin,loomchild/git-plugin,recena/git-plugin,MarkEWaite/git-plugin,nKey/git-plugin,nordstrand/git-plugin,jacob-keller/git-plugin,Vlatombe/git-plugin,MarkEWaite/git-plugin,mklein0/git-plugin,Jellyvision/git-plugin,ialbors/git-plugin,pauxus/git-plugin,avdv/git-plugin,ydubreuil/git-plugin,ivan-fedorov/git-plugin,sgargan/git-plugin,KostyaSha/git-plugin,ldtkms/git-plugin,mlgiroux/git-plugin,MarkEWaite/git-plugin,nKey/git-plugin,abaditsegay/git-plugin,mklein0/git-plugin,mlgiroux/git-plugin,Talend/git-plugin,Talend/git-plugin,Deveo/git-plugin,ndeloof/git-plugin,pauxus/git-plugin,Talend/git-plugin,ldtkms/git-plugin,abaditsegay/git-plugin,nKey/git-plugin,Jellyvision/git-plugin