* lib/net/http.rb (HTTPGenericRequest#send_request_with_body_stream):
	  increased encoding chunk size for POST request with body_stream
	  (1K -> 16K). patched by Brian Candler. #1284.
	* test/net/http/test_post_io.rb: added for the patch. It's good if a
	  patch comes with a test.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_7@27172 b2dd03c8-39d4-4d8f-98ff-823fe69b080e