converted obamenu from python 2 to 3 using 2to3 tool to fix Invalid output from pipe-menu "obamenu"

[Giuncan]

It seems that obamenu fails because it is written for python2 while latest RCM servers are installed with python3

$ "<RCM_PATH>/RCM/rcm/server/bin/obamenu"
  File "<RCM_PATH>/RCM/rcm/server/bin/obamenu", line 140
    print "Error: Invalid .desktop line'" + l + "'"
          ^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print("Error: Invalid .desktop line'" + l + "'")?

I converted the script using 2to3 tool.