pidgin/ljfisher-ssl-client-auth

Make the max size of incoming smileys a pref instead of harcoding it. Patch from Xinef (with small modifications) Refs #5231
#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);