Bug with pkg if only a single file is installed

[David Bateman]

It seems that pkg can fail if there is only a single file to install. An
example is the combinatorics toolbox that has a single file plus a
PKG_ADD with autoload's for other functions. I think the attached patch
addresses this, thogh Soren should probably comment..

D.

Index: scripts/pkg/pkg.m
===================================================================
RCS file: /cvs/octave/scripts/pkg/pkg.m,v
retrieving revision 1.10
diff -c -r1.10 pkg.m
*** scripts/pkg/pkg.m   12 Sep 2006 21:25:27 -0000      1.10
--- scripts/pkg/pkg.m   13 Sep 2006 19:31:54 -0000
***************
*** 599,604 ****
--- 599,611 ----
  function copy_files (desc, packdir, bindir)
      ## Copy the files from "inst" to installdir
      if (! dirempty([packdir "inst"]))
+       if (! exist (desc.dir, "dir"))
+       [status, output] = mkdir (desc.dir);
+         if (status != 1)
+          error("Couldn't create installation directory %s : %s\n", 
+                desc.dir, output);
+         endif
+       endif
        [status, output] = system(["cp -R " packdir "inst/* " desc.dir]);
        if (status != 0)
            rm_rf(desc.dir);