* configure.in: added Cygwin specific APR_SETVARs.

  * os/config.m4: added Cygwin specific values for $OS and $OS_DIR.
    $OS_DIR will change to "cygwin" as soon as I get the DSO/DLL things
    clean as with 1.3.20.

  * support/logresolve.c: added OS specific #ifdef statement to define
    h_errno as extern __declspec(dllimport); it's imported from the
    cygwin1.dll itself.

Submitted by: Stipe Tolj <tolj@wapme-systems.de>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@90805 13f79535-47bb-0310-9956-ffa450edef68