Add EM350 PTT extended command support for RIL library.
change RIL_UNSOL_PTT_GROUP_INDICATOR_UPDATE's response from char ** to raw bytes
add PTT commands support in libril
define RIL_REQUEST_PTT_QUERY_BIZ_STATE in ril.h
remove RRRRIL_UNSOL_PTT_GROUP_INFO_CHANGED and RIL_UNSOL_PTT_CALL_GRANT_STATUS_CHANGED from ril.h
rename RIL_UNSOL_PTT_GROUP_INDICATOR_UPDATE to RIL_UNSOL_PTT_QUERY_AVAILABLE_GROUP, and change response type of RIL_XXXX_PTT_QUERY_AVAILABLE_GROUPS
Fix ril library compiling error.
Fix compiling errors.
Update responseGroupList implementation.
Fix PTT group and p2p call feature.
Update ptt unsolicited feature.
Add ptt emergency info support.