[imapproxy] Diff for cygwin.

[Mike Cochrane]

Not sure about this one... so i'm submitting this diff to those who know :-)

as /etc/imapproxy is not a very nice default when you're running under windows i
changed it to etc/imaproxy so i can just create an etc folder inside the folder
i have imapproxy.exe in.

-Mike :-)

Index: defines.h
===================================================================
RCS file: /httpd/horde/imapproxy/include/defines.h,v
retrieving revision 1.3
diff -w -r1.3 defines.h
48a49,51
> #if defined(__CYGWIN32__) || defined (__CYGWIN__)
> # define DEFAULT_CONFIG_FILE "etc/imapproxy"
> #else
49a53,54
> #endif
>