Add support for read-only shadow tables on virtual tables. Added the

SQLITE_DEFAULT_DEFENSIVE compile-time option that can put SQLite in
defensive mode by default.

FossilOrigin-Name: 9c685171c4d7ae8615d1489c9621aba79fe4ef1f0e56b75823b88c3e70d127df

diff --cc manifest
index dc94aaf723f74e5920a65d0bcaf51401e8900c61,ce32d639542edd2f9d786a7cc880644d249e26f6..f938831465eb12de015ea761073225a235f4a772
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,10 -1,10 +1,10 @@@
- C Add\sthe\s"changesetfuzz"\sprogram.\sFor\sfuzzing\schangeset\sblobs.
- D 2018-11-10T17:37:39.350
 -C Remove\sa\sNEVER()\sthat\sis\sreachable\safter\sall.\sReverts\scheckin\s[9292d3351c40339].
 -D 2018-11-10T04:14:51.670
++C Add\ssupport\sfor\sread-only\sshadow\stables\son\svirtual\stables.\s\sAdded\sthe\nSQLITE_DEFAULT_DEFENSIVE\scompile-time\soption\sthat\scan\sput\sSQLite\sin\s\ndefensive\smode\sby\sdefault.
++D 2018-11-10T18:23:32.590
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 -F Makefile.in edbb6e20bb1decf65f6c64c9e61004a69bdf8afb39cdce5337c916b03dfcd1e3
 +F Makefile.in d298b31769d4c737887102462cd45684786b09f2a626a80b3e413790fb436219
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 -F Makefile.msc 5402eae167757dae275cd99c21d21d77db2ec1877c58b4f790ef747a60b95c9f
 +F Makefile.msc 071853dfc2148aadaeb7a153b9986cc9d71b7f256874f79b119f97a4c89453f5
  F README.md 377233394b905d3b2e2b33741289e093bc93f2e7adbe00923b2c5958c9a9edee
  F VERSION 654da1d4053fb09ffc33a3910e6d427182a7dcdc67e934fa83de2849ac83fccb
  F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
@@@ -1778,8 -1776,7 +1778,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P a8d65214a567eb1afd703ee4d09d398247e060a610b46097a726364db2861001 b6d549c988e765789c4a81d586170451db9f5da1973dde8aa0329445f915fbb2
- R 3aab479e5526baa65c5716bd2f30b798
- T +closed b6d549c988e765789c4a81d586170451db9f5da1973dde8aa0329445f915fbb2
- U dan
- Z 8cf96a5c541d4ca666ae779a175a9738
 -P bf88efcec40036e0805940ff6371643dbc518442457d2bc18c711753607ae36c
 -R 19746ae363c493cc4aa5c073aad34c6e
++P 2bae0e7c1c1393aeb0bb7234865e410c9ca0e3c31cdc8566e9503f70ca7ac64c c5dc7fb873b15bd4e4f31b944c9feee78ab7ec2cb74f5fc55b615fd0e2784a88
++R 2f07d98f23b322254bb650c4a8ed900f
++T +closed c5dc7fb873b15bd4e4f31b944c9feee78ab7ec2cb74f5fc55b615fd0e2784a88
+ U drh
 -Z 3b35de947b23f688f81123c6213c6034
++Z b28ad0e8933d08dc5443b19047381cba

diff --cc manifest.uuid
index 0c7fc69d368779988e2fc7a06779dce53c4617ac,92bef2fc1fcbe89b4342edb65480c251659049af..9992552831b1139be20e62197c15629ea476e281
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 2bae0e7c1c1393aeb0bb7234865e410c9ca0e3c31cdc8566e9503f70ca7ac64c
 -c5dc7fb873b15bd4e4f31b944c9feee78ab7ec2cb74f5fc55b615fd0e2784a88
++9c685171c4d7ae8615d1489c9621aba79fe4ef1f0e56b75823b88c3e70d127df