Makefile.win: Install proper pcre DLL file during debug build install.

PR: 55235
Submitted by: Ben Reser <ben reser org>
Reviewed by: gsmith, trawick, covener


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1515375 13f79535-47bb-0310-9956-ffa450edef68