Send retry SMS over 1x

If MO SMS fails with SMS_FAIL_RETRY and phone's radio tech is CDMA,
 send the subsequent retry sms on 1x if criteria for active 1x
voice call and IMS registration still apply

Change-Id: I797b9218ef013402fae2d01242f1f7b9a02c64f2
CRs-Fixed: 607158

Send SMS over 1x when on eHRPD and active voice call

When UE is attached to eHRPD network and IMS is registered:
- If there is an active 1x RTT voice call, send SMS over 1x
- If there no active 1xRTT voice call, send SMS over IMS

This feature is enabled by default. To disable it, set
config_send_sms1x_on_voice_call to false in config.xml

CRs-Fixed: 565247

Conflicts:
src/java/com/android/internal/telephony/cdma/CdmaSMSDispatcher.java
Change-Id: I767ff1747c8498a5fd3760e2a8a6cbd764716b37