Is there a preferred method by which to find the file system path to a
ROS package in RTTLua? The reason I want it is to properly load
configuration files without hard-coding paths into my scripts.
os.execute() outputs the correct value, but I can't seem to capture it
and use it later. Looks like there's a 'roslua' package that has
support for ROS-type things, but I'm worried that roslua and rttlua
might step on each other? Presumably I can just take what roslua is
doing in its find_rospack() method and use the commands directly, but
that seems hackish.