Use latest bootstrap.py available

(Now support --version option to choose a
 particular version of zc.buildout)

bootstrap.py

@@ -17,7 +17,7 @@ Simply run this script in a directory containing a buildout.cfg.
 The script accepts buildout command-line options, so you can
 use the -c option to specify an alternate configuration file.
 
-$Id: bootstrap.py 90478 2008-08-27 22:44:46Z georgyberdyshev $
+$Id: bootstrap.py 102545 2009-08-06 14:49:47Z chrisw $
 """
 
 import os, shutil, sys, tempfile, urllib2
@@ -49,11 +49,18 @@ else:
 cmd = 'from setuptools.command.easy_install import main; main()'
 ws  = pkg_resources.working_set
 
+if len(sys.argv) > 2 and sys.argv[1] == '--version':
+    VERSION = '==%s' % sys.argv[2]
+    args = sys.argv[3:] + ['bootstrap']
+else:
+    VERSION = ''
+    args = sys.argv[1:] + ['bootstrap']
+
 if is_jython:
     import subprocess
-    
-    assert subprocess.Popen([sys.executable] + ['-c', quote(cmd), '-mqNxd', 
-           quote(tmpeggs), 'zc.buildout'], 
+
+    assert subprocess.Popen([sys.executable] + ['-c', quote(cmd), '-mqNxd',
+           quote(tmpeggs), 'zc.buildout' + VERSION],
            env=dict(os.environ,
                PYTHONPATH=
                ws.find(pkg_resources.Requirement.parse('setuptools')).location
@@ -63,7 +70,7 @@ if is_jython:
 else:
     assert os.spawnle(
         os.P_WAIT, sys.executable, quote (sys.executable),
-        '-c', quote (cmd), '-mqNxd', quote (tmpeggs), 'zc.buildout',
+        '-c', quote (cmd), '-mqNxd', quote (tmpeggs), 'zc.buildout' + VERSION,
         dict(os.environ,
             PYTHONPATH=
             ws.find(pkg_resources.Requirement.parse('setuptools')).location
@@ -71,7 +78,7 @@ else:
         ) == 0
 
 ws.add_entry(tmpeggs)
-ws.require('zc.buildout')
+ws.require('zc.buildout' + VERSION)
 import zc.buildout.buildout
-zc.buildout.buildout.main(sys.argv[1:] + ['bootstrap'])
+zc.buildout.buildout.main(args)
 shutil.rmtree(tmpeggs)