configure.tgt: Add *-*-dragonfly to supported targets.

2015-07-14  John Marino  <gnugcc@marino.st>

	* configure.tgt: Add *-*-dragonfly to supported targets.

From-SVN: r225779

libatomic/ChangeLog

+2015-07-14  John Marino  <gnugcc@marino.st>
+
+	* configure.tgt: Add *-*-dragonfly to supported targets.
+
 2015-01-21  Andrew Waterman <waterman@cs.berkeley.edu>
 
 	* fop_n.c (libat_fetch_op): Align address to word boundary.

libatomic/configure.tgt

@@ -110,7 +110,7 @@ case "${target}" in
 	;;
 
   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu \
-  | *-*-netbsd* | *-*-freebsd* | *-*-openbsd* \
+  | *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly* \
   | *-*-solaris2* | *-*-sysv4* | *-*-irix6* | *-*-osf* | *-*-hpux11* \
   | *-*-darwin* | *-*-aix* | *-*-cygwin*)
 	# POSIX system.  The OS is supported.