Update to version 5.10.2

• 5.10.2 2015/03/13

Deal with excess bytes in HTTP response for keepalive YAZ-830

Refactor ssl_put and tcpip_put to one function YAZ-832

Refactor ssl_get and tcpip_get to one function YAZ-831

Fix SEGV yaz-client for HTTP decoding error YAZ-829

Fix buffer overflow in cmd_elements in yaz-client YAZ-828