[patch] testsuite enable PIE tests on DragonFly

[John Marino]

DragonFly supports PIE but the tests for it are disabled.
The attached patch for the trunk will enable these checks on DragonFly.
Thanks for considering this!

John

p.s. suggested gcc/testsuite/changelog entry:

2015-07-XX  John Marino  <gnu...@marino.st>

        * lib/target-supports.exp (check_effective_target_pie):
        Add *-*-dragonfly*


Index: gcc/testsuite/lib/target-supports.exp
===================================================================
--- gcc/testsuite/lib/target-supports.exp       (revision 225610)
+++ gcc/testsuite/lib/target-supports.exp       (working copy)
@@ -974,6 +974,7 @@
 
 proc check_effective_target_pie { } {
     if { [istarget *-*-darwin\[912\]*]
+        || [istarget *-*-dragonfly*]
         || [istarget *-*-freebsd*]
         || [istarget *-*-linux*]
         || [istarget *-*-gnu*] } {