Fix QStorageInfo in devel/qt5-core.

QStorageInfo did not return any valid data on FreeBSD.

Add upstreamed patch:
   getmntinfo() was wrongly called with flag 0. This changes it to use MNT_NOWAIT.

PR:		220941

devel/qt5-core/Makefile

@@ -2,7 +2,7 @@
 
 PORTNAME=	core
 DISTVERSION=	${QT5_VERSION}
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel
 PKGNAMEPREFIX=	qt5-
 

devel/qt5-core/files/patch-git_fa3940cc

@@ -0,0 +1,37 @@
+From fa3940cc4b5580070f465d1f64a23a69bc925367 Mon Sep 17 00:00:00 2001
+From: Thiago Macieira <thiago.macieira@intel.com>
+Date: Mon, 29 May 2017 14:00:53 -0700
+Subject: [PATCH] QStorageInfo: Pass MNT_NOWAIT to getmntinfo
+
+This forces the API not to wait for synchronous I/O from the filesystems
+and get the information, but instead just use the cached information
+directly. It's a good idea if we have an unresponsive FS, like NFS with
+an unreachable server.
+
+Task-number: QTBUG-61096
+Change-Id: Iddeeffb6f4ad4a2894a2fffd14c32f6e90664a63
+Reviewed-by: Tobias C. Berner
+Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
+Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
+---
+ src/corelib/io/qstorageinfo_unix.cpp | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git src/corelib/io/qstorageinfo_unix.cpp src/corelib/io/qstorageinfo_unix.cpp
+index b9c9883609..9072b34f54 100644
+--- src/corelib/io/qstorageinfo_unix.cpp
++++ src/corelib/io/qstorageinfo_unix.cpp
+@@ -195,8 +195,12 @@ static bool shouldIncludeFs(const QStorageIterator &it)
+ 
+ #if defined(Q_OS_BSD4)
+ 
++#ifndef MNT_NOWAIT
++#  define MNT_NOWAIT 0
++#endif
++
+ inline QStorageIterator::QStorageIterator()
+-    : entryCount(::getmntinfo(&stat_buf, 0)),
++    : entryCount(::getmntinfo(&stat_buf, MNT_NOWAIT)),
+       currentIndex(-1)
+ {
+ }