merge revision(s) 57780: [Backport #12975]

docs for IO#print

	* io.c: [DOC] split documentation for IO#print into smaller paragraphs,
	  delete duplicate sentence, fix call-seq.
	  Based on a patch by Dario Daic. [ruby-core:78291] [Bug #12975]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@57929 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

io.c

@@ -7006,18 +7006,20 @@ rb_f_printf(int argc, VALUE *argv)
 
 /*
  *  call-seq:
- *     ios.print()             -> nil
+ *     ios.print               -> nil
  *     ios.print(obj, ...)     -> nil
  *
- *  Writes the given object(s) to <em>ios</em>. The stream must be
+ *  Writes the given object(s) to <em>ios</em>. Returns <code>nil</code>.
- *  opened for writing. If the output field separator (<code>$,</code>)
+ *
- *  is not <code>nil</code>, it will be inserted between each object.
+ *  The stream must be opened for writing.
- *  If the output record separator (<code>$\\</code>)
+ *  Each given object that isn't a string will be converted by calling
- *  is not <code>nil</code>, it will be appended to the output. If no
+ *  its <code>to_s</code> method.
- *  arguments are given, prints <code>$_</code>. Objects that aren't
+ *  When called without arguments, prints the contents of <code>$_</code>.
- *  strings will be converted by calling their <code>to_s</code> method.
+ *
- *  With no argument, prints the contents of the variable <code>$_</code>.
+ *  If the output field separator (<code>$,</code>) is not <code>nil</code>,
- *  Returns <code>nil</code>.
+ *  it is inserted between objects.
+ *  If the output record separator (<code>$\\</code>) is not <code>nil</code>,
+ *  it is appended to the output.
  *
  *     $stdout.print("This is ", 100, " percent.\n")
  *

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.4.0"
 #define RUBY_RELEASE_DATE "2017-03-13"
-#define RUBY_PATCHLEVEL 84
+#define RUBY_PATCHLEVEL 85
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 3