Import SQLite 3.7.6.3.

third_party/sqlite/safe-tolower.patch

-This patch removes the usage of tolower() in fts code, which is not locale
-neutral and causes problem in some locales such as Turkish.
-See http://crbug.com/15261 for details.
-An upstream ticket was also created for this issue:
-http://www.sqlite.org/src/tktview/991789d9f3136a0460dc83a33e815c1aa9757c26
-
-Contains backport for upstream http://www.sqlite.org/src/ci/b8b465ed2c.
-
-Index: ext/fts3/fts3.c
-===================================================================
---- ext/fts3/fts3.c     2009-09-04 13:37:41.000000000 -0700
-+++ ext/fts3/fts3.c     2009-09-14 18:17:45.000000000 -0700
-@@ -326,7 +326,7 @@
-   return (c&0x80)==0 ? isspace(c) : 0;
- }
- static int safe_tolower(char c){
--  return (c&0x80)==0 ? tolower(c) : c;
-+  return (c>='A' && c<='Z') ? (c-'A'+'a') : c;
- }
- static int safe_isalnum(char c){
-   return (c&0x80)==0 ? isalnum(c) : 0;
-Index: ext/fts3/fts3_expr.c
-===================================================================
---- ext/fts3/fts3_expr.c
-+++ ext/fts3/fts3_expr.c
-@@ -58,7 +58,6 @@ int sqlite3_fts3_enable_parentheses = 0;
- 
- #include "fts3_expr.h"
- #include "sqlite3.h"
--#include <ctype.h>
- #include <string.h>
- #include <assert.h>
- 
-@@ -84,7 +83,7 @@ struct ParseContext {
- ** negative values).
- */
- static int fts3isspace(char c){
--  return (c&0x80)==0 ? isspace(c) : 0;
-+  return c==' ' || c=='\t' || c=='\n' || c=='\r' || c=='\v' || c=='\f';
- }
- 
- /*
-Index: ext/fts3/fts3_porter.c
-===================================================================
---- ext/fts3/fts3_porter.c
-+++ ext/fts3/fts3_porter.c
-@@ -29,7 +29,6 @@
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
--#include <ctype.h>
- 
- #include "fts3_tokenizer.h"
- 
-Index: ext/fts3/fts3_tokenizer1.c
-===================================================================
---- ext/fts3/fts3_tokenizer1.c
-+++ ext/fts3/fts3_tokenizer1.c
-@@ -29,7 +29,6 @@
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
--#include <ctype.h>
- 
- #include "fts3_tokenizer.h"
- 
-@@ -55,6 +54,9 @@ static const sqlite3_tokenizer_module simpleTokenizerModule;
- static int simpleDelim(simple_tokenizer *t, unsigned char c){
-   return c<0x80 && t->delim[c];
- }
-+static int fts3_isalnum(int x){
-+  return (x>='0' && x<='9') || (x>='A' && x<='Z') || (x>='a' && x<='z');
-+}
- 
- /*
- ** Create a new tokenizer instance.
-@@ -89,7 +91,7 @@ static int simpleCreate(
-     /* Mark non-alphanumeric ASCII characters as delimiters */
-     int i;
-     for(i=1; i<0x80; i++){
--      t->delim[i] = !isalnum(i);
-+      t->delim[i] = !fts3_isalnum(i);
-     }
-   }
- 
-@@ -191,7 +193,7 @@ static int simpleNext(
-         ** case-insensitivity.
-         */
-         unsigned char ch = p[iStartOffset+i];
--        c->pToken[i] = ch<0x80 ? tolower(ch) : ch;
-+        c->pToken[i] = (ch>='A' && ch<='Z') ? ch-'A'+'a' : ch;
-       }
-       *ppToken = c->pToken;
-       *pnBytes = n;
-Index: ext/fts2/fts2.c
-===================================================================
---- ext/fts2/fts2.c     2009-09-04 13:37:41.000000000 -0700
-+++ ext/fts2/fts2.c     2009-09-14 18:17:02.000000000 -0700
-@@ -372,7 +372,7 @@
-   return (c&0x80)==0 ? isspace(c) : 0;
- }
- static int safe_tolower(char c){
--  return (c&0x80)==0 ? tolower(c) : c;
-+  return (c>='A' && c<='Z') ? (c-'A'+'a') : c;
- }
- static int safe_isalnum(char c){
-   return (c&0x80)==0 ? isalnum(c) : 0;
-Index: ext/fts2/fts2_tokenizer1.c
-===================================================================
---- ext/fts2/fts2_tokenizer1.c  2009-09-03 13:32:06.000000000 -0700
-+++ ext/fts2/fts2_tokenizer1.c  2009-09-02 11:40:21.000000000 -0700
-@@ -191,7 +191,7 @@
-         ** case-insensitivity.
-         */
-         unsigned char ch = p[iStartOffset+i];
--        c->pToken[i] = ch<0x80 ? tolower(ch) : ch;
-+        c->pToken[i] = (ch>='A' && ch<='Z') ? (ch-'A'+'a') : ch;
-       }
-       *ppToken = c->pToken;
-       *pnBytes = n;