Clean up scripts in path/ directory * matlabroot.m: Use standard Octave convention of retval for return variable. * pathdef.m: Update docstring, Use new code for extracting savepath reference. * savepath.m: Update docstring. Remove use of deprecated strmatch function. Use '~' to ignore function return values rather than a tmp variable.

--- a/scripts/path/matlabroot.m
+++ b/scripts/path/matlabroot.m
@@ -25,11 +25,12 @@
 ## @seealso{OCTAVE_HOME}
 ## @end deftypefn
 
-function val = matlabroot ()
+function retval = matlabroot ()
 
-  val = OCTAVE_HOME;
+  retval = OCTAVE_HOME;
 
 endfunction
 
+
 %!assert (matlabroot(), OCTAVE_HOME())