* numeric.c (flo_eq): alway check if operands are NaN.

[ruby-list:39685]

* lib/cgi/session.rb: use LOCK_SH to read, and a few other
  improvements.  [ruby-core:02328]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6372 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

numeric.c

@@ -834,9 +834,7 @@ flo_eq(x, y)
 	return num_equal(x, y);
     }
     a = RFLOAT(x)->value;
-#if defined __BORLANDC__
     if (isnan(a) || isnan(b)) return Qfalse;
-#endif
     return (a == b)?Qtrue:Qfalse;
 }