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.
#include "conversation.h"
PurpleAccount *purple_accounts_find_ext(const char *name, const char *protocol_id,
gboolean (*account_test)(const PurpleAccount *account));
PurpleAccount *purple_accounts_find_any(const char *name, const char *protocol);
PurpleAccount *purple_accounts_find_connected(const char *name, const char *protocol);