opencollada: rebuild for gcc stdc++ dropping gcc4 compat

add patch to fix compilation with pcre-8.42

srcpkgs/opencollada/patches/004-fix-libpcre-8.42-compat.patch

@@ -0,0 +1,23 @@
+From 7b4c3ce3407c47619cd4e79052d60db4ce937327 Mon Sep 17 00:00:00 2001
+From: Dennis Schridde <devurandom@gmx.net>
+Date: Thu, 12 Jul 2018 06:52:36 +0200
+Subject: [PATCH] COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h:
+ Include pcre.h
+
+This fixes a compilation error with libpcre-8.42:
+```
+error: conflicting declaration 'typedef struct real_pcre8_or_16 pcre'
+```
+
+--- COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
++++ COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
+@@ -13,8 +13,7 @@
+ 
+ #include "COLLADABUPrerequisites.h"
+ 
+-struct real_pcre;
+-typedef struct real_pcre pcre;
++#include <pcre.h>
+ 
+ 
+ namespace COLLADABU

srcpkgs/opencollada/template

@@ -1,7 +1,7 @@
 # Template file for 'opencollada'
 pkgname=opencollada
 version=1.6.62
-revision=1
+revision=2
 wrksrc="OpenCOLLADA-${version}"
 build_style=cmake
 configure_args="-DUSE_SHARED=TRUE"