Merge recent enhancements from trunk, including test scripts enhancements and

the removal of limits on the number of terms in a VALUES clause.

FossilOrigin-Name: 5a2dec55bfadc328b430a5231a037b37831a5530

src/main.c

@@ -594,6 +594,11 @@ int sqlite3_config(int op, ...){
     }
 #endif
 
+    case SQLITE_CONFIG_PMASZ: {
+      sqlite3GlobalConfig.szPma = va_arg(ap, unsigned int);
+      break;
+    }
+
     default: {
       rc = SQLITE_ERROR;
       break;