Add //third_party/sqlite to dirs_to_snapshot, remove net_sql.patch

third_party/sqlite/src/test/walslow.test

 # 2010 March 17
 #
 # The author disclaims copyright to this source code.  In place of
 # a legal notice, here is a blessing:
 #
 #    May you do good and not evil.
 #    May you find forgiveness for yourself and forgive others.
 #    May you share freely, never taking more than you give.
 #
 #***********************************************************************
 # This file implements regression tests for SQLite library.  The
 # focus of this file is testing the operation of the library in
 # "PRAGMA journal_mode=WAL" mode. The tests in this file use 
 # brute force methods, so may take a while to run.
 #
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
 
 ifcapable !wal {finish_test ; return }
 
 proc reopen_db {} {
   catch { db close }
-  file delete -force test.db test.db-wal
+  forcedelete test.db test.db-wal
   sqlite3 db test.db
   execsql { PRAGMA journal_mode = wal }
 }
 
 db close
 save_prng_state
 for {set seed 1} {$seed<10} {incr seed} {
   expr srand($seed)
   restore_prng_state
   reopen_db
@@ skipping 11 matching lines @@
       execsql { INSERT INTO t1 VALUES(randomblob($w), randomblob($x)) }
       execsql { PRAGMA integrity_check }
     } {ok}
 
     do_test walslow-1.seed=$seed.$iTest.2 {
       execsql "PRAGMA wal_checkpoint;"
       execsql { PRAGMA integrity_check }
     } {ok}
 
     do_test walslow-1.seed=$seed.$iTest.3 {
-      file delete -force testX.db testX.db-wal
-      file copy test.db testX.db
-      file copy test.db-wal testX.db-wal
+      forcedelete testX.db testX.db-wal
+      copy_file test.db testX.db
+      copy_file test.db-wal testX.db-wal
   
       sqlite3 db2 testX.db
       execsql { PRAGMA journal_mode = WAL } db2
       execsql { PRAGMA integrity_check } db2
     } {ok}
   
     do_test walslow-1.seed=$seed.$iTest.4 {
       execsql { SELECT count(*) FROM t1 WHERE a!=b } db2
     } [execsql { SELECT count(*) FROM t1 WHERE a!=b }]
     db2 close
   }
 }
 
 
 finish_test