BinPath - Search appropriate directories to find executable.
SYNOPSIS
BinPathprogram_name
DESCRIPTION
This is currently a dummy procedure but it is intended to handle finding executables on
systems which do not have a search path mechanism. It could also be used to append command
line arguments such as those controlling verbosity of output. It is strongly recommended that
you use it whereever programs are executed in CCP4i scripts. The procedure input is the
program name program_name and the full path name of the executable should be returned.