[ 22:35 adridg  ]

• 459478 Mk/bsd.qt.mk
• 459478 devel/qt4-corelib/Makefile
• 459478 devel/qt4-corelib/pkg-plist
• 459478 devel/qt4/files/extrapatch-aarch64

Fix Qt4 atomics on aarch64. Add a patch from Fedora (similar changes in
Arch and Debian) that implements the atomics; removes the use of generic
atomics on aarch64. This allows textproc/qt4-dbus to build.

PR:		223988
Reported by:	linimon
Approved by:	tcberner (mentor)
Obtained from:	Fedora (url is in patch)
Differential Revision:	https://reviews.freebsd.org/D13935