[1.7] Updated setup-1.7.exe (version 2.637)

[Christopher Faylor]

I just uploaded a new setup-1.7.exe (version 2.637) to
http://cygwin.com/setup-1.7.exe.  It contains the following changes and
bug fixes:

- Avoid setting HOME to /tmp since it causes new home directories to
  be set to /tmp. (Corinna Vinschen)

- Change package search option to be case-insensitive. (Corinna Vinschen)

- Fix some problems with button placement when resizing package
  selection screen.  (Dave Korn)

Please replace your local version of setup-1.7.exe with this one.