fix a bug that may lead to memory leak

ijkplayer upate to k0.5.1

OpenSSL upgrade to 1.0.2g

add some api

1.smaller so binary size
2.support more CPU architecture (read the noice in README.MD)

1.update ijkplayer to latest version (0.4.4.1)
2.support https (complie ijkplayer with openssl)
3.support x86

release 0.2

first release