[Cygwin]: Fix the problem that the generated httpd.conf contains lines like:

"AddModule mod_alias.dll" instead of "AddModule mod_alias.c"


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@98220 13f79535-47bb-0310-9956-ffa450edef68