merge revision(s) 57492: [Backport #12405]

test_queue.rb: fix portability

	* test/thread/test_queue.rb (test_queue_with_trap): fix
	  portability.  use SIGINT instead of SIGUSR2 which is supported
	  on not all platforms.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@58164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/thread/test_queue.rb

@@ -543,14 +543,14 @@ class TestQueue < Test::Unit::TestCase
   end
 
   def test_queue_with_trap
-    assert_in_out_err([], <<-INPUT, %w(USR2 USR2 exit), [])
+    assert_in_out_err([], <<-INPUT, %w(INT INT exit), [])
       q = Queue.new
-      trap(:USR2){
-        q.push 'USR2'
+      trap(:INT){
+        q.push 'INT'
       }
       Thread.new{
         loop{
-          Process.kill :USR2, $$
+          Process.kill :INT, $$
         }
       }
       puts q.pop

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.3.3"
 #define RUBY_RELEASE_DATE "2017-03-28"
-#define RUBY_PATCHLEVEL 273
+#define RUBY_PATCHLEVEL 274
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 3