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.

as suggested by Bluebie.

- Link libeio to pthread.
- Add -D_GNU_SOURCE to libeio wscript.

Now supports:
- command options: .help, .break, .clear, .exit
- local vars and global functions
- ability to print 0, false and ""
- when value is a function, prints [Function]
- when object is circular, prints [Circular Object] instead of throwing an error

Now you can require("/repl.js") in your server to be able to examine it
while it's running.