Update sqlite to 3.7.3.

third_party/sqlite/src/tool/mksqlite3c.tcl

Index: third_party/sqlite/src/tool/mksqlite3c.tcl
diff --git a/third_party/sqlite/src/tool/mksqlite3c.tcl b/third_party/sqlite/src/tool/mksqlite3c.tcl
old mode 100755
new mode 100644
index 5a66e0443c35e9386c7f46c440860267298202c4..da31306963e5852e0c065e15a049523ec7d45197
--- a/third_party/sqlite/src/tool/mksqlite3c.tcl
+++ b/third_party/sqlite/src/tool/mksqlite3c.tcl
@@ -66,8 +66,6 @@ puts $out [subst \
 ** if you want a wrapper to interface SQLite with your choice of programming
 ** language. The code for the "sqlite3" command-line shell is also in a
 ** separate file. This file contains only code for the core SQLite library.
-**
-** This amalgamation was generated on $today.
 */
 #define SQLITE_CORE 1
 #define SQLITE_AMALGAMATION 1}]
@@ -89,7 +87,7 @@ foreach hdr {
    btree.h
    btreeInt.h
    fts3.h
-   fts3_expr.h
+   fts3Int.h
    fts3_hash.h
    fts3_tokenizer.h
    hash.h
@@ -111,6 +109,7 @@ foreach hdr {
    sqliteLimit.h
    vdbe.h
    vdbeInt.h
+   wal.h
 } {
   set available_hdr($hdr) 1
 }
@@ -213,6 +212,7 @@ foreach file {
    sqliteInt.h
 
    global.c
+   ctime.c
    status.c
    date.c
    os.c
@@ -245,6 +245,7 @@ foreach file {
    pcache1.c
    rowset.c
    pager.c
+   wal.c
 
    btmutex.c
    btree.c
@@ -253,6 +254,7 @@ foreach file {
    vdbemem.c
    vdbeaux.c
    vdbeapi.c
+   vdbetrace.c
    vdbe.c
    vdbeblob.c
    journal.c
@@ -269,6 +271,7 @@ foreach file {
    callback.c
    delete.c
    func.c
+   fkey.c
    insert.c
    legacy.c
    loadext.c
@@ -296,6 +299,8 @@ foreach file {
    fts3_porter.c
    fts3_tokenizer.c
    fts3_tokenizer1.c
+   fts3_write.c
+   fts3_snippet.c
 
    rtree.c
    icu.c