Import SQLite 3.8.7.4.

third_party/sqlite/src/test/pageropt.test

Index: third_party/sqlite/src/test/pageropt.test
diff --git a/third_party/sqlite/src/test/pageropt.test b/third_party/sqlite/src/test/pageropt.test
index 1c634f6443c81ab34489d6425f4a31cb7018a60b..7191661ba5d7cd4e599c9129bbda142b87f4d9d5 100644
--- a/third_party/sqlite/src/test/pageropt.test
+++ b/third_party/sqlite/src/test/pageropt.test
@@ -17,7 +17,7 @@
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
 
-ifcapable {!pager_pragmas||secure_delete} {
+ifcapable {!pager_pragmas||secure_delete||direct_read} {
   finish_test
   return
 }
@@ -87,12 +87,17 @@ do_test pageropt-1.4 {
 # But if the other thread modifies the database, then the cache
 # must refill.
 #
+ifcapable mmap {
+  set x [expr {[permutation]=="mmap" ? 1 : 6}]
+} else {
+  set x 6
+}
 do_test pageropt-1.5 {
   db2 eval {CREATE TABLE t2(y)}
   pagercount_sql {
     SELECT hex(x) FROM t1
   }
-} [list 6 0 0 $blobcontent]
+} [list $x 0 0 $blobcontent]
 do_test pageropt-1.6 {
   pagercount_sql {
     SELECT hex(x) FROM t1