Overriding autoreconf.cmd/autoconf.cmd/automake.cmd should delete default autoreconf.args/autoconf.args/automake.args

[ryandesign (Ryan Carsten Schmidt)]

When using "use_autoreconf yes" or "use_autoconf yes" or "use_automake yes", MacPorts automatically adds "port:autoconf port:automake port:libtool" to "depends_build". If you override "autoreconf.cmd" or "autoconf.cmd" or "automake.cmd", then MacPorts deletes those dependencies, on the reasoning that it does not know what this alternate command will actually do.

MacPorts also automatically sets "autoreconf.args --install --verbose" or "autoconf.args --verbose" or "automake.args --verbose". For the same reasoning as above, it should remove those arguments if an alternate command is specified.