- Add -f flag to rm on make clean.
- Use old jsmin - the new one seems to be broken.

That means even if they are Attached(), libev will still exit if there is
nothing else to do.

To be used internally. Needs an exposed interface.

Instead directly call execvp(). This change is needed for the
soon-to-be-added signal handlers because the /bin/sh parent process does not
pass all signals to it's children, particularly SIGUSR1 on Linux.

The parameters of createChildProcess had to be changed slightly.
utils.exec() also has a changed implementation. A bug involving quoted
arguments was knowingly introduced into utils.exec(). Will fix later.

include() should not be used by libraries because it will pollute the global
namespace. To discourage this behavior and bring Node more in-line with
the current CommonJS module system, include() is removed.

Small scripts like unit tests often times do want to pollute the global
namespace for ease. To avoid the boiler plate code of

  var x = require("/x.js");
  var foo = x.foo;
  var bar = x.bar;

The function node.mixin() is stolen from jQuery's jQuery.extend. So that it
can be written:

  node.mixin(require("/x.js"));

Reference:
http://docs.jquery.com/Utilities/jQuery.extend
http://groups.google.com/group/nodejs/browse_thread/thread/f9ac83e5c11e7e87

The big parseUri RE was showing up often in profiles - this is simpler and
yields better performance by taking advantage of the C http parser.

This is in preparation for a special node_waf script for building external
modules.

Also change system library path to $PREFIX/lib/node/libraries

Also added multipart.parse as a convenience function

This way there won't be strange tools/.waf-12343 directories hanging about.
All that waf needs to run is inside the tools/wafadmin directory.