2013-08-23: merge releases into default for further development.

merge releases into default for further development.

diff --git a/.hgsigs b/.hgsigs
--- a/.hgsigs
+++ b/.hgsigs
@@ -3,3 +3,4 @@ 158cb99e123c4f7fc194453c44eff9fb243a3844
 3c551786b6b203fec3a9262630a71e9ac9e76b37 0 iJwEAAEIAAYFAlCSSeMACgkQ3M8NswvBBUjEPAP7BAIfJkAycrrGb6IX82v8ftPpEauoEJQ+KB97WOirbBF3loCek7tL94IPDa2iiRy0pKY2SBDSHdu2NxiH1iyfmEKtCIwr51Yqc93FxrMwxxiQwuuF+4+SRZ2DjtGCu+P7OwjLP5pjmoG42wYOaDSx5svBE8Ywen0rRXtPHG58st4=
 2bff5c0308d08f340cf5b33694466ae07ac56a22 0 iJwEAAEIAAYFAlCr52kACgkQ3M8NswvBBUjacwP9Evyh3kMeWmGGc6v5UzJnm7g72OSDUlLn0Zop3blCKyNLZwxtRtRD7FzFhsrsN3wp8EL/suZmZNQR/W9A0s2qx/iotCQc+EgdCWVLsVpt9gYkZxa1DBRrVRF95evkOfVozElmuItK2yxRFcFunKXqWrbZFzbu8f1k37B76t9j/qI=
 08246a90c8066fd0defc58b6568bc770905d9538 0 iJwEAAEIAAYFAlFpwdAACgkQ3M8NswvBBUgI2gP/YHMokfLIxkflFsEGZDI7HkCnWOWmVT1dND29WmQij2Lq7PI/874qGoApR5K4ShZd2C4+xk8pAzhWshgmwyryiZV6mOX6Z6ykH4xq+f2f6agrM4YYqv4H/SIIS9sAjA2bTz/u+OHRNGtF4miKpbPuP8AdCReKmyz93Auf5wRdI5c=
+b21e00e7cac8e8ba98016f480f7b00bc4576fc78 0 iJwEAAEIAAYFAlIWlXYACgkQ3M8NswvBBUjEJgP8CJSO+XGtGLirejR5rsQy8JbMENKUtmuzY2aOCIgQ3Mk44WikDHqlnps3XD6Zr+K230UxRJmcTl/IAtYd9Dd6VcfqzWuRgDlDzCfmnJtnKC6hnYRHMb3DNCLY5ZceD7t3sXy7EoC7CodWnTwQDqkOlSF6H1oM6rDeYyelGxSnbnU=
diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -7,3 +7,4 @@ 1226b572fe8531d08ce7c46a67acbd50d03c6fed
 60a06053d8cdba12a6cfc0753dc5dab36b57590f 0.2.1
 0d5bd543ab137064aab252d5fe627a676b434e98 0.2.2
 ba0e1fba077fa2172a0b0a2c2841a3f3fd70d071 0.3
+c3d791b75bce0e424b68ccfceeaa1cc97aba0808 0.4