Reduce the amount of heap required to store many schemas by storing each

column datatype appended to the column name, rather than as a separate
allocation.

FossilOrigin-Name: 842b21162713bb141b845b01c136457a31af4ab0

src/util.c

@@ -109,6 +109,14 @@ int sqlite3Strlen30(const char *z){
   return 0x3fffffff & (int)strlen(z);
 }
 
+/*
+** The string z[] is followed immediately by another string.  Return
+** a poiner to that other string.
+*/
+const char *sqlite3StrNext(const char *z){
+  return z + strlen(z) + 1;
+}
+
 /*
 ** Set the current error code to err_code and clear any prior error message.
 */