Paths with spaces break XP build

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Set SCT_DIR to something with spaces, like "C:\Documents and Settings\Me\My 
Documents\swtoolkit"
2. Go to omaha dir and run hammer

What is the expected output? What do you see instead?
Expected output: a full build.

Actual output: build dies with complaint: 
scons: Reading SConscript files ...
Using precompiled headers.
Building versions: 1.3.23.0
python C:\Documents and Settings\Me\My Documents\omaha\tools\proxy
_clsid_utils.py
python: can't open file 'C:\Documents': [Errno 2] No such file or directory

What version of the product are you using? On what operating system?
version_major = 1    # 1-65535
version_minor = 3    # 0-65535
version_build = 23   # 1-65535
version_patch = 0    # 0-65535

oneclick_plugin_version = 9
update_plugin_version = 3

Original issue reported on code.google.com by craig.de...@gmail.com on 22 Oct 2012 at 9:56