mkhon

Fix apr-iconv build with Visual Studio 2013 (and earlier?).

The error without the patch is:

adobe-stdenc.obj : error LNK2011: precompiled object not linked in; image may not run 
..\Release\iconv\adobe-stdenc.so : fatal error LNK1120: 1 unresolved externals 
--- build/modules.mk.win.orig	2007-10-19 05:49:36.000000000 +0700
+++ build/modules.mk.win	2015-03-05 17:49:21.000000000 +0600
@@ -218,7 +218,7 @@