setup, upx, and TLS

[Charles Wilson]

"win32/pe TLS handling added"
http://upx.hg.sourceforge.net/hgweb/upx/upx/rev/3616167cefd7

So, we ought to be able to upx-compress setup.exe without relying on
cgf's cross-env, as soon as the next version of upx is released.  Yay!

--
Chuck