62x version of renamed script with a uniqe name to avoid clashes ... 

when installing/using as requested by Shahzad.
The clash was seen in 5.3.x when independent "make" processes tried to copy the scripts from both packages into the CMSSW bin/ area at the same time. As the content of the scripts is slightly different, I renamed both to be unique.
This is the 62x version of the PR.