-d stats has performance impact on Windows (vmware?)

[evmar]

@pcc reported this -d stats output on a Windows vm:

depfile load            1193    718.9           857.7

However, the total end-to-end time of the build was only ~0.5s when -d stats was off.

[evmar]

One idea for a workaround is to use a different API for timing "long" things, like the end-to-end manifest load process.
http://www.virtualdub.org/blog/pivot/entry.php?id=106 discusses using timeGetTime().