Get SQLite to build

* changed headers
* removed redundant declarations
* ran clang-format
* added sqlite3.mk

third_party/sqlite3/fts3_tokenizer1.c

@@ -12,6 +12,7 @@
 **
 ** Implementation of the "simple" full-text-search tokenizer.
 */
+/* clang-format off */
 
 /*
 ** The code in this file is only compiled if:
@@ -22,15 +23,14 @@
 **     * The FTS3 module is being built into the core of
 **       SQLite (in which case SQLITE_ENABLE_FTS3 is defined).
 */
-#include "fts3Int.h"
+#include "third_party/sqlite3/fts3Int.h"
 #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
 
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "fts3_tokenizer.h"
+#include "libc/assert.h"
+#include "libc/mem/mem.h"
+#include "libc/stdio/stdio.h"
+#include "libc/str/str.h"
+#include "third_party/sqlite3/fts3_tokenizer.h"
 
 typedef struct simple_tokenizer {
   sqlite3_tokenizer base;