Add support for row-value comparisons, including IN operators, and

row-value updates in the UPDATE statement.

FossilOrigin-Name: ddb5f0558c44569913d22781ab78f3e9b58d7aea

diff --cc manifest
index 0d41570cd87c8b64f1145d24429199f8141e499f,274df7eb97828d9a157b7d6250af5a3488d0b313..ef9ea10c498e2c92450da533c321252b4f3019b2
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Add\sthe\sext/misc/memvfs.c\sextension\sthat\simplements\sa\sVFS\sfor\sread-only\ndatabase\sfiles\scontained\sin\smemory.
- D 2016-09-07T18:11:11.252
 -C Fix\sa\sproblem\shandling\sexpressions\slike\s"(a,\sb)\sIN\s(SELECT\s...\sORDER\sBY\s1,\s2)"\swhen\sthere\sis\san\sindex\son\s"a"\sbut\snot\s"b".
 -D 2016-09-07T19:37:20.043
++C Add\ssupport\sfor\srow-value\scomparisons,\sincluding\sIN\soperators,\sand\nrow-value\supdates\sin\sthe\sUPDATE\sstatement.
++D 2016-09-07T19:54:24.437
  F Makefile.in cfd8fb987cd7a6af046daa87daa146d5aad0e088
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc 5017381e4853b1472e01d5bb926be1268eba429c
@@@ -1512,7 -1522,7 +1523,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P d8451fe84d09db6ec7e1bd5f0708ea1b5e85f3d6
- R 40828d7c09ecd4e3a6b5df17d516ba22
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 -R 09b192e18dc26d97d5a589656b60205f
 -U dan
 -Z 3d9ebf68fced17edbc91ddfab98198fe
++P 12b7782a9af91eab913e159149cb28b3f5a6557c 7f2c5c9ee3628c968306a5ab2e5a9a761f1b8055
++R 751b4792e244c0de84e03a1b48f5b06d
++T +closed 7f2c5c9ee3628c968306a5ab2e5a9a761f1b8055
 +U drh
- Z f7bf016242cf820d90b7abae39af230e
++Z 8852ee27cbc1c9d45a2ebb8e532166b1

diff --cc manifest.uuid
index 824ab0842bcbc534d6d8ba2cd8b0252ece5447c8,a5783a2c58220ed6527a171a69d45e90eec53957..c02863b07fd9bcfca43c4bddb41b4e0bdbdf7e4e
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 12b7782a9af91eab913e159149cb28b3f5a6557c
 -7f2c5c9ee3628c968306a5ab2e5a9a761f1b8055
++ddb5f0558c44569913d22781ab78f3e9b58d7aea