merges most of r29882 from trunk into ruby_1_9_2.

--
added some tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@30263 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_complex.rb

@@ -517,6 +517,23 @@ class Complex_Test < Test::Unit::TestCase
     assert_equal([Complex(2),Complex(1)], Complex(1).coerce(Complex(2)))
   end
 
+  class ObjectX
+    def + (x) Rational(1) end
+    alias - +
+    alias * +
+    alias / +
+    alias quo +
+    alias ** +
+    def coerce(x) [x, Complex(1)] end
+  end
+
+  def test_coerce2
+    x = ObjectX.new
+    %w(+ - * / quo **).each do |op|
+      assert_kind_of(Numeric, Complex(1).__send__(op, x))
+    end
+  end
+
   def test_unify
     if @unify
       assert_instance_of(Fixnum, Complex(1,2) + Complex(-1,-2))

test/ruby/test_rational.rb

@@ -718,6 +718,26 @@ class Rational_Test < Test::Unit::TestCase
     assert_equal([Rational(2),Rational(1)], Rational(1).coerce(Rational(2)))
   end
 
+  class ObjectX
+    def + (x) Rational(1) end
+    alias - +
+    alias * +
+    alias / +
+    alias quo +
+    alias div +
+    alias % +
+    alias remainder +
+    alias ** +
+    def coerce(x) [x, Rational(1)] end
+  end
+
+  def test_coerce2
+    x = ObjectX.new
+    %w(+ - * / quo div % remainder **).each do |op|
+      assert_kind_of(Numeric, Rational(1).__send__(op, x))
+    end
+  end
+
   def test_unify
     if @unify
       assert_instance_of(Fixnum, Rational(1,2) + Rational(1,2))

version.h

@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.2"
-#define RUBY_PATCHLEVEL 103
+#define RUBY_PATCHLEVEL 104
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1