madedit makes use of hidden symbol feature of gcc while our system header

don't like it.  The recent addition of hidden symbol feature have exposed
this issue.

This is a minimal set of change that makes it work.

Pointed out by:	tinderbox via miwi and pav

editors/madedit/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	madedit
 PORTVERSION=	0.2.9
-PORTREVISION=	4
+PORTREVISION=	5
 CATEGORIES=	editors
 MASTER_SITES=	SF/${PORTNAME}/MadEdit/MadEdit-${PORTVERSION}
 
@@ -18,6 +18,7 @@ USE_GETTEXT=	yes
 USE_WX=		2.6+
 WANT_UNICODE=	yes
 MAKE_JOBS_SAFE=	yes
+USE_DOS2UNIX=	yes
 
 LIB_DEPENDS+=	boost_regex:${PORTSDIR}/devel/boost-libs
 

editors/madedit/files/patch-charset-detector__src__entry__impl.cpp

@@ -0,0 +1,21 @@
+--- ./charset-detector/src/entry/impl.cpp.orig	2011-03-22 16:53:02.918217862 -0700
++++ ./charset-detector/src/entry/impl.cpp	2011-03-22 16:53:47.868220433 -0700
+@@ -41,8 +41,10 @@
+ #include "chardetect.h"
+ #include "nscore.h"
+ #include "nsUniversalDetector.h"
++#pragma GCC visibility push(default)
+ #include <string.h>
+ #include <stdlib.h>
++#pragma GCC visibility pop
+ 
+ #ifdef _WIN32
+ #   include <windows.h>
+@@ -53,7 +55,6 @@
+ #pragma managed(push, off)
+ #endif
+ 
+-
+ class DllDetector : public nsUniversalDetector
+ {
+ protected:

editors/madedit/files/patch-charset-detector__src__prmem.h

@@ -0,0 +1,12 @@
+--- ./charset-detector/src/prmem.h.orig	2011-03-22 16:53:02.938216470 -0700
++++ ./charset-detector/src/prmem.h	2011-03-22 16:53:03.708221682 -0700
+@@ -37,7 +37,9 @@
+ #ifndef nsDummyPrmem_h__
+ #define nsDummyPrmem_h__
+ 
++#pragma GCC visibility push(default)
+ #include <stdlib.h>
++#pragma GCC visibility pop
+ 
+ inline void* PR_Malloc(size_t len)
+ {