Import SQLite 3.7.6.3.

third_party/sqlite/src/ext/fts2/fts2_tokenizer1.c

Index: third_party/sqlite/src/ext/fts2/fts2_tokenizer1.c
diff --git a/third_party/sqlite/src/ext/fts2/fts2_tokenizer1.c b/third_party/sqlite/src/ext/fts2/fts2_tokenizer1.c
index 1f03cc4b626329777e2bc0c4e4832e80b7e85082..7e13366910d097982174bf61aa3d77a26e050a5a 100644
--- a/third_party/sqlite/src/ext/fts2/fts2_tokenizer1.c
+++ b/third_party/sqlite/src/ext/fts2/fts2_tokenizer1.c
@@ -29,7 +29,6 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#include <ctype.h>
 
 #include "fts2_tokenizer.h"
 
@@ -89,7 +88,8 @@ 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] = !((i>='0' && i<='9') || (i>='A' && i<='Z') ||
+                      (i>='a' && i<='z'));
     }
   }
 
@@ -191,7 +191,7 @@ static int simpleNext(
         ** case-insensitivity.
         */
         unsigned char ch = p[iStartOffset+i];
-        c->pToken[i] = (ch>='A' && ch<='Z') ? (ch-'A'+'a') : ch;
+        c->pToken[i] = (ch>='A' && ch<='Z') ? (ch - 'A' + 'a') : ch;
       }
       *ppToken = c->pToken;
       *pnBytes = n;