smpp esm_class config, go to config file

In response to this problem http://www.mail-archive.com/[email protected]/msg03528.html 
, i write a patch to make the esm_class configurable from the smpp  
group config.

i think than this changes must appear in next versions of kannel:

CHANGES:
ADD THIS LINES.

+ gwlib/cfg.def
line 345 -	ADD		OCTSTR(esm_class)

+ gw/smsc/smsc_smpp.c
- line 168, 	ADD		
int esm_class_default;

- line 221,		CHANGE 	
long wait_ack, int wait_ack_action)
TO
long wait_ack, int wait_ack_action, int esm_class_default)

- line 262,		ADD		
smpp->esm_class_default = esm_class_default;

- line 853,		CHANGE
pdu->u.submit_sm.esm_class = ESM_CLASS_SUBMIT_STORE_AND_FORWARD_MODE;
TO
pdu->u.submit_sm.esm_class = smpp->esm_class_default;

- line 2009,	ADD
int esm_class_default;

- line 2138,	ADD (add a blank line "press enter" paste this, and other  
line  "press enter")

  if (cfg_get_integer(&esm_class_default, grp,  
octstr_imm("esm_class")) == -1)
esm_class_default = ESM_CLASS_SUBMIT_DEFAULT_SMSC_MODE;

- line 2151,	CHANGE
service_type, connection_timeout, wait_ack, wait_ack_action);
TO
service_type, connection_timeout, wait_ack, wait_ack_action,  
esm_class_default); 	



In the attachments is the modified files..