Add dependency information to output of "pkg describe" (patch #9880). * describe.m: Add new field "depends" to pkg_desc_list structure. Call print_package_description() with additional input pkg_desc_list.depends. * describe.m (print_package_description): Change function prototype to accept new input with dependency information. Format and print output on dependencies.

gnulib = http://hg.octave.org/gnulib