[t:3008], modify comments a bit

git-svn-id: file:///svn/toku/tokudb@25193 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/leafentry.h

@@ -60,16 +60,16 @@ struct __attribute__ ((__packed__)) leafentry {
             uint32_t num_cxrs; // number of committed transaction records
             uint8_t  num_pxrs; // number of provisional transaction records
             u_int8_t key_xrs[0]; //Actual key,
-                                 //then "interesting" TXNIDs:
+                                 //then TXNIDs of transaction records relevant for reads:
                                  //  if provisional uxrs exist, store OUTERMOST TXNID
                                  //  store committed TXNIDs, from most recently committed to least recently committed
-                                 //then "interesting" lengths (length is at most 1<<31, MSB is used to store the type bit):
-                                 //  if provisional uxrs exist, store length and type of INNERMOST TXNID
-                                 //  store length and type of committed TXNIDs, in same order as above
-                                 //then "interesting" data
-                                 //  if provisional uxrs exist, store data for INNERMOST TXNID
-                                 //  store data for committed TXNIDs
-                                 //if provisional uxrs still exist (that is, num_puxrs > 1, so INNERMOST provisional != OUTERMOST provisional):
+                                 //then lengths of transaction records relevant for reads (length is at most 1<<31, MSB is used to store the type bit):
+                                 //  if provisional xrs exist, store length and type associated with INNERMOST TXNID
+                                 //  store length and type associated with committed TXNIDs, in same order as above
+                                 //then data of transaction records relevant for reads
+                                 //  if provisional xrs exist, store data associated with INNERMOST TXNID
+                                 //  store data associated with committed TXNIDs
+                                 //if provisional xrs still exist (that is, num_puxrs > 1, so INNERMOST provisional TXNID != OUTERMOST provisional TXNID):
                                  //  for OUTERMOST provisional TXNID:
                                  //    1 byte: store type
                                  //    4 bytes: length (if type is INSERT)