openh264 2.4.1-3

[Takashi Yano]

The following packages have been uploaded to the Cygwin distribution:

* libopenh264-headers-2.4.1-3
* libopenh264-2.4.1-3

OpenH264 is a codec library which supports H.264 encoding and decoding. It is suitable for use in real time applications such as WebRTC. The binary library (runtime) itself will be downloaded from http://ciscobinary.openh264.org/

- Fix a bug that postinsta/preremove scripts were missing.