[sql] Import SQLite 3.17.0.

third_party/sqlite/src/src/sqliteLimit.h

Index: third_party/sqlite/src/src/sqliteLimit.h
diff --git a/third_party/sqlite/src/src/sqliteLimit.h b/third_party/sqlite/src/src/sqliteLimit.h
index 75cad1274b4241ab579b1736fbf8c19b8409e9a3..0554e6158188924b550fa2fc09adc2c4fea1cdf4 100644
--- a/third_party/sqlite/src/src/sqliteLimit.h
+++ b/third_party/sqlite/src/src/sqliteLimit.h
@@ -101,13 +101,13 @@
 ** The suggested maximum number of in-memory pages to use for
 ** the main database table and for temporary tables.
 **
-** IMPLEMENTATION-OF: R-31093-59126 The default suggested cache size
-** is 2000 pages.
+** IMPLEMENTATION-OF: R-30185-15359 The default suggested cache size is -2000,
+** which means the cache size is limited to 2048000 bytes of memory.
 ** IMPLEMENTATION-OF: R-48205-43578 The default suggested cache size can be
 ** altered using the SQLITE_DEFAULT_CACHE_SIZE compile-time options.
 */
 #ifndef SQLITE_DEFAULT_CACHE_SIZE
-# define SQLITE_DEFAULT_CACHE_SIZE  2000
+# define SQLITE_DEFAULT_CACHE_SIZE  -2000
 #endif
 
 /*
@@ -120,8 +120,9 @@
 
 /*
 ** The maximum number of attached databases.  This must be between 0
-** and 62.  The upper bound on 62 is because a 64-bit integer bitmap
-** is used internally to track attached databases.
+** and 125.  The upper bound of 125 is because the attached databases are
+** counted using a signed 8-bit integer which has a maximum value of 127
+** and we have to allow 2 extra counts for the "main" and "temp" databases.
 */
 #ifndef SQLITE_MAX_ATTACHED
 # define SQLITE_MAX_ATTACHED 10
@@ -156,7 +157,7 @@
 ** The default size of a database page.
 */
 #ifndef SQLITE_DEFAULT_PAGE_SIZE
-# define SQLITE_DEFAULT_PAGE_SIZE 1024
+# define SQLITE_DEFAULT_PAGE_SIZE 4096
 #endif
 #if SQLITE_DEFAULT_PAGE_SIZE>SQLITE_MAX_PAGE_SIZE
 # undef SQLITE_DEFAULT_PAGE_SIZE