pidgin/ljfisher-ssl-client-auth

Changed a strcpy in the mxit prpl to a bounds-checked g_strlcpy.

Thanks to the Electronic Frontier Foundation (https://www.eff.org/) for
this patch.
VOID:POINTER,POINTER,OBJECT
BOOLEAN:OBJECT,POINTER,STRING
VOID:STRING,STRING
VOID:STRING,STRING,DOUBLE
VOID:ENUM,STRING,STRING
VOID:ENUM,STRING,STRING,BOOLEAN
VOID:FLAGS,FLAGS
VOID:STRING,STRING,OBJECT,OBJECT