If the user has not set it explicitly, set the "PRAGMA synchronous" setting to

SQLITE_DEFAULT_SYNCHRONOUS when a database connection changes from wal to
rollback journal mode.

FossilOrigin-Name: 5c604479fda06714500959e121c719d1b6c8e54d1658eb9f560a4af95b7c5829

diff --cc manifest
index 7d0466ed6170ea6d52f7370c4adab2602a3403fa,27d666d7ff4bb2446ce7da8226a4cfc4ca197e9a..dde039258189ce4e357adba35272963f5ee46284
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Simplified\sOOM\sdetection\sin\sthe\sinstr()\sSQL\sfunction.
- D 2017-03-16T14:28:52.423
 -C Fix\sa\stypo\scausing\sthe\sbuild\sto\sfail\sif\sSQLITE_DEFAULT_SYNCHRONOUS==SQLITE_DEFAULT_WAL_SYNCHRONOUS.
 -D 2017-03-16T18:54:42.504
++C If\sthe\suser\shas\snot\sset\sit\sexplicitly,\sset\sthe\s"PRAGMA\ssynchronous"\ssetting\sto\nSQLITE_DEFAULT_SYNCHRONOUS\swhen\sa\sdatabase\sconnection\schanges\sfrom\swal\sto\nrollback\sjournal\smode.
++D 2017-03-16T18:55:21.135
  F Makefile.in 9605f4c49eace601d5c12c85dd6e037cc613a6d823e857614ba26b42f1285db0
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc 1faf9f06aadc9284c212dea7bbc7c0dea7e8337f0287c81001eff500912c790a
@@@ -1565,7 -1566,7 +1566,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P e3d487162d1596ce125644f754ed9531ef4412f31f6837c3e31b7542b90602fe
- R 6130240157d02268edef1462c36002d9
- U drh
- Z 5ff31e1a870d72447c943f18c5a0c832
 -P 78030c0f52aa39fb2ab32c75c56e6bcefe6382b8df28b1909e3c911e42dbeca3
++P 6d85eb5736781b43aa674d9544c7523b849b4e634f371702f8764b33e22e1e9f df39adeaa4d73a3d4ec831843b8ec7fd449f8b2137bdc7d7c320958d00e98db6
+ R ce97b08e421fd719736eea9dd091c75c
++T +closed df39adeaa4d73a3d4ec831843b8ec7fd449f8b2137bdc7d7c320958d00e98db6
+ U dan
 -Z dc5f7c52928823522e8c3e89a1ed9d18
++Z 3997e48cc61ec2c438e101b7960cfa80

diff --cc manifest.uuid
index eee2f53d07f55320fa7dd52cc354685d016581dc,57ec0405146212b4abe205a7378f870380693d0a..195d935585d8f6b9583f1806601179cd1f6eaaf1
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 6d85eb5736781b43aa674d9544c7523b849b4e634f371702f8764b33e22e1e9f
 -df39adeaa4d73a3d4ec831843b8ec7fd449f8b2137bdc7d7c320958d00e98db6
++5c604479fda06714500959e121c719d1b6c8e54d1658eb9f560a4af95b7c5829