Add compatibility shims to libsrtp for v1->v2 transition

srtp/crypto/include/rdbx.h

 /*
  * rdbx.h
  *
  * replay database with extended packet indices, using a rollover counter
  *
  * David A. McGrew
  * Cisco Systems, Inc.
  *
  */
 
@@ skipping 32 matching lines @@
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 
 #ifndef RDBX_H
 #define RDBX_H
 
 #include "datatypes.h"
 #include "err.h"
 
+/**
+ * Compatibility shim for v1->v2 transition.
+ */
+
+#define srtp_rdbx_get_packet_index rdbx_get_packet_index
+
 /* #define ROC_TEST */  
 
 #ifndef ROC_TEST
 
 typedef uint16_t sequence_number_t;   /* 16 bit sequence number  */
 typedef uint32_t rollover_counter_t;   /* 32 bit rollover counter */
 
 #else  /* use small seq_num and roc datatypes for testing purposes */
 
 typedef unsigned char sequence_number_t;         /* 8 bit sequence number   */
@@ skipping 150 matching lines @@
 #endif /* RDBX_H */