[sql] Import reference version of SQLite 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/shared7.test

Index: third_party/sqlite/sqlite-src-3080704/test/shared7.test
diff --git a/third_party/sqlite/src/test/shared7.test b/third_party/sqlite/sqlite-src-3080704/test/shared7.test
similarity index 87%
copy from third_party/sqlite/src/test/shared7.test
copy to third_party/sqlite/sqlite-src-3080704/test/shared7.test
index d003f0aee3ed6d114e1f3446b7718d349abc5d59..9f4880f56e2a9a91b34fa2c5e2e46248c87f501d 100644
--- a/third_party/sqlite/src/test/shared7.test
+++ b/third_party/sqlite/sqlite-src-3080704/test/shared7.test
@@ -23,6 +23,9 @@ do_test shared7-1.1 {
   sqlite3_enable_shared_cache
 } {1}
 
+# EVIDENCE-OF: R-05098-06501 In shared cache mode, attempting to attach
+# the same database file more than once results in an error.
+#
 do_test shared7-1.2 {
   db close
   sqlite3 db test.db
@@ -35,7 +38,7 @@ do_test shared7-1.2 {
 } {1 {database is already attached}}
 
 do_test shared7-1.3 {
-  file delete -force test2.db test2.db-journal
+  forcedelete test2.db test2.db-journal
   db eval {
     ATTACH 'test2.db' AS test2;
     CREATE TABLE test2.t2(y);