diff --git a/Lib/compileall.py b/Lib/compileall.py
new file mode 100644
index 0000000..cd02851
--- /dev/null
+++ b/Lib/compileall.py
@@ -0,0 +1,67 @@
+# Routines to force "compilation" of all .py files in a directory
+# tree or on sys.path.  By default recursion is pruned at a depth of
+# 10 and the current directory, if it occurs in sys.path, is skipped.
+# When called as a script, compiles argument directories, or sys.path
+# if no arguments.
+# After a similar module by Sjoerd Mullender.
+
+import os
+import sys
+import py_compile
+
+def compile_dir(dir, maxlevels = 10):
+	print 'Listing', dir, '...'
+	try:
+		names = os.listdir(dir)
+	except os.error:
+		print "Can't list", dir
+		names = []
+	names.sort()
+	for name in names:
+		fullname = os.path.join(dir, name)
+		if os.path.isfile(fullname):
+			head, tail = name[:-3], name[-3:]
+			if tail == '.py':
+				print 'Compiling', fullname, '...'
+				try:
+					py_compile.compile(fullname)
+				except KeyboardInterrupt:
+					del names[:]
+					print '\n[interrupt]'
+					break
+				except:
+					print 'Sorry:', sys.exc_type + ':',
+					print sys.exc_value
+		elif maxlevels > 0 and \
+		     name != os.curdir and name != os.pardir and \
+		     os.path.isdir(fullname) and \
+		     not os.path.islink(fullname):
+			compile_dir(fullname, maxlevels - 1)
+
+def compile_path(skip_curdir = 1):
+	for dir in sys.path:
+		if dir == os.curdir and skip_curdir:
+			print 'Skipping current directory'
+		else:
+			compile_dir(dir, 0)
+
+def main():
+	import getopt
+	try:
+		opts, args = getopt.getopt(sys.argv[1:], 'l')
+	except getopt.error, msg:
+		print msg
+		print "usage: compileall [-l] [directory ...]"
+		print "-l: don't recurse down"
+		print "if no arguments, -l sys.path is assumed"
+	maxlevels = 10
+	for o, a in opts:
+		if o == '-l': maxlevels = 0
+	if args:
+		for dir in sys.argv[1:]:
+			compile_dir(dir, maxlevels)
+	else:
+		compile_path()
+
+if __name__ == '__main__':
+	main()
diff --git a/Lib/importall.py b/Lib/importall.py
index 1d20377..1383e80 100755
--- a/Lib/importall.py
+++ b/Lib/importall.py
@@ -1,3 +1,5 @@
+# THIS IS OBSOLETE -- USE MODULE 'compileall' INSTEAD!
+
 # Utility module to import all modules in the path, in the hope
 # that this will update their ".pyc" files.
 
diff --git a/Lib/py_compile.py b/Lib/py_compile.py
new file mode 100644
index 0000000..ed54f47
--- /dev/null
+++ b/Lib/py_compile.py
@@ -0,0 +1,25 @@
+# Routine to "compile" a .py file to a .pyc file.
+# This has intimate knowledge of how Python/import.c does it.
+# By Sjoerd Mullender (I forced him to write it :-).
+
+MAGIC = 0x999903
+
+def wr_long(f, x):
+	f.write(chr( x        & 0xff))
+	f.write(chr((x >> 8)  & 0xff))
+	f.write(chr((x >> 16) & 0xff))
+	f.write(chr((x >> 24) & 0xff))
+
+def compile(file, cfile = None):
+	import os, marshal, __builtin__
+	f = open(file)
+	codestring = f.read()
+	timestamp = os.fstat(f.fileno())[8]
+	f.close()
+	codeobject = __builtin__.compile(codestring, file, 'exec')
+	if not cfile:
+		cfile = file + 'c'
+	fc = open(cfile, 'w')
+	wr_long(fc, MAGIC)
+	wr_long(fc, timestamp)
+	marshal.dump(codeobject, fc)
diff --git a/Lib/urllib.py b/Lib/urllib.py
index 476570b..a4a891f 100644
--- a/Lib/urllib.py
+++ b/Lib/urllib.py
@@ -452,7 +452,7 @@
 		i = j+3
 	return res
 
-always_safe = string.letters + string.digits + '_,.+-'
+always_safe = string.letters + string.digits + '_,.-'
 def quote(s, safe = '/'):
 	safe = always_safe + safe
 	res = ''
diff --git a/Lib/whrandom.py b/Lib/whrandom.py
index 670ca7a..7317b44 100644
--- a/Lib/whrandom.py
+++ b/Lib/whrandom.py
@@ -39,7 +39,7 @@
 		if x is None:
 			# Initialize from current time
 			import time
-			t = int(time.time())
+			t = int(time.time() % 0x80000000)
 			t, x = divmod(t, 256)
 			t, y = divmod(t, 256)
 			t, z = divmod(t, 256)