added Makefile for pgi
added Makefile for pgi

currently it doesn't link f90 calls to c routines

robertodr/xcfun,dftlibs/xcfun,dftlibs/xcfun,robertodr/xcfun,dftlibs/xcfun,dftlibs/xcfun,bast/xcfun,bast/xcfun,robertodr/xcfun,bast/xcfun,robertodr/xcfun,bast/xcfun