[PATCH] Parse SIM alpha fields (EF-SPN) according to TS 11.11.

[Denis Kenzior]

Hi,

Your patch was a 'bit' inefficient, generating way too many function calls.  
I've pushed my own version called sim_string_to_utf8, which can be found in 
util.c. 

Please review it for any issues..

Regards,
-Denis