put 8.2 check into main plproxy.h to avoid random errors on older vers
put 8.2 check into main plproxy.h to avoid random errors on older vers

petere/plproxy-dev,markokr/plproxy-dev,mpihlak/plproxy-dev,markokr/plproxy-dev,saaros/plproxy-dev,myrkraverk/plproxy,nad2000/plproxy,saaros/plproxy-dev