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.

Removing requireAsync and includeAsync from global scope for now as a
temporary fix.  Reported by Yuffster.

It's broken in Python 2.4.4. One gets this message when trying to run
configure:

  [...]
  Checking for SYS_clock_gettime           : ok
  Checking for library rt                  : ok
  Checking for function clock_gettime      : ok
  Checking for function nanosleep          : ok
  Checking for function ceil               : ok
  ---- deps/udns ----
  Traceback (most recent call last):
    File "/path/to/node/tools/waf", line 148, in ?
      Scripting.prepare(t, cwd, VERSION, wafdir)
    File "/path/to/node/tools/.waf-1.5.8-3e327cd9534c48e6762f56fdb1332663/wafadmin/Scripting.py", line 102, in prepare
      prepare_impl(t,cwd,ver,wafdir)
    File "/path/to/node/tools/.waf-1.5.8-3e327cd9534c48e6762f56fdb1332663/wafadmin/Scripting.py", line 95, in prepare_impl
      main()
    File "/path/to/node/tools/.waf-1.5.8-3e327cd9534c48e6762f56fdb1332663/wafadmin/Scripting.py", line 130, in main
      fun(ctx)
    File "/path/to/node/tools/.waf-1.5.8-3e327cd9534c48e6762f56fdb1332663/wafadmin/Scripting.py", line 168, in configure
      conf.sub_config([''])
    File "/path/to/node/tools/.waf-1.5.8-3e327cd9534c48e6762f56fdb1332663/wafadmin/Configure.py", line 100, in sub_config
      self.recurse(k,name='configure')
    File "/path/to/node/tools/.waf-1.5.8-3e327cd9534c48e6762f56fdb1332663/wafadmin/Utils.py", line 391, in recurse
      f(self)
    File "<string>", line 82, in configure
    File "<string>", line 48, in conf_subproject
    File "/usr/lib/python2.4/shutil.py", line 111, in copytree
      os.mkdir(dst)
  OSError: [Errno 2] No such file or directory: '/sites/rabidlabs.net/sandboxes/m/public_html/projects/0909.node/node/build/default/deps/udns'

The problem is probably this:
http://mail.python.org/pipermail/python-bugs-list/2005-January/027118.html

As a solution I am copying 2.6's version of the function in.

For the moment too large is 10.

I've heard delete is inefficient in v8. Better to let the garbage collector
take care of it naturally.