Add the sqlite3_value_frombind() interface. Use that interface to

improve fts3_tokenizer().

FossilOrigin-Name: b3f2c3205a28dc21ea7080e5e1ba246ce9c9b90c1309262ca11d8e40943ed677

diff --cc manifest
index 48cabea0909dd29e0516fe065d99c7bd1b7fbefa,f93371c03dd52c40398a08046491412db98bbc0c..b82af22f6881cb8932a58d718d1d7a3e3564302b
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Improvements\sto\sthe\ssqlite3ExprImpliesNonNullRow()\stheorem\sprover.
- D 2019-04-01T19:42:42.832
 -C Performance\simprovement\son\sthe\sOP_Variable\sopcode.
 -D 2019-04-01T20:57:11.741
++C Add\sthe\ssqlite3_value_frombind()\sinterface.\s\sUse\sthat\sinterface\sto\nimprove\sfts3_tokenizer().
++D 2019-04-02T00:28:54.786
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -589,13 -587,13 +589,13 @@@ F src/upsert.c 0dd81b40206841814d46942a
  F src/utf.c 810fbfebe12359f10bc2a011520a6e10879ab2a163bcb26c74768eab82ea62a5
  F src/util.c 82a2e3f691a3b654be872e305dab1f455e565dedf5e6a90c818c1ab307c00432
  F src/vacuum.c 532553ee1d47f69c1198858107b1f3af3d16af25f2ab4ce3b1263d9e333f26e2
- F src/vdbe.c eeaf0af94b48379b01a25566013138a68e286c82a2da68b2ab30974442518470
 -F src/vdbe.c 09a2d9b2498f4a496413b9f23700eefd780657de352c38cdce0d30121e119030
++F src/vdbe.c 711ef421b3bb3db3b2476067b2dc3c71ef5844d9b1a723026578f89f6da621e8
  F src/vdbe.h 712bca562eaed1c25506b9faf9680bdc75fc42e2f4a1cd518d883fa79c7a4237
- F src/vdbeInt.h a76d5eed62c76bcd8de7afd3147fac1bc40c5a870582664bcd7d071ef437c37f
- F src/vdbeapi.c 7a052df80d7e2e55382076174633e888f21fe200feb5d49b1b441b4c38ab851a
+ F src/vdbeInt.h 5ea6f6548a14b20a9210ca055a989478a37d16f84740cc123834f13e4527bce7
+ F src/vdbeapi.c a6e462bd7853e272cf614d6fbda7f3f20c89a2d255805855b32895a5983ddcec
  F src/vdbeaux.c 7aa412e7e56eb53649d87766f3064994a31991ee2b2716bf8c3129fa15cc7653
  F src/vdbeblob.c f5c70f973ea3a9e915d1693278a5f890dc78594300cf4d54e64f2b0917c94191
- F src/vdbemem.c 3e89e087df928eba80e520824078dc563c579a0848b1557ac36845ec14392923
+ F src/vdbemem.c 6d67403debf6eb2b0c8d956ea09bb0ad79b4b45af2a7e2b2736894e703ae3286
  F src/vdbesort.c 90aad5a92608f2dd771c96749beabdb562c9d881131a860a7a5bccf66dc3be7f
  F src/vdbetrace.c 79d6dbbc479267b255a7de8080eee6e729928a0ef93ed9b0bfa5618875b48392
  F src/vtab.c 2462b7d6fd72b0b916477f5ef210ee49ab58cec195483ebdac0c8c5e3ec42cab
@@@ -1815,7 -1813,7 +1815,7 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
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 -R 35248090ce78ba3337b0ca54b485da2c
++P 3fde627616030ca0de87169467e2e453fdc91154942e3a3a92a221df5923b2d2 1dc7993bb6957587a6c63142e97b8e4137c3d81bbfd724f86048e0894bcb429b
++R c147f0404a98a8ecfae0b6c4ab1ffd42
  U drh
- Z 294bced1998ead69a391511a2008e481
 -Z ce4b7fb940826537bfbabb06ad9779b9
++Z 218a8691f3a518f79e729d9161496492

diff --cc manifest.uuid
index 67a789dd53d536028dfa639dceefc9a20f8269f5,b71bbe7838266e0c9e74e2bc460efdecf29debc0..d896f2b6846ee7b989cc14ec33bfb4c675a95587
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 3fde627616030ca0de87169467e2e453fdc91154942e3a3a92a221df5923b2d2
 -1dc7993bb6957587a6c63142e97b8e4137c3d81bbfd724f86048e0894bcb429b
++b3f2c3205a28dc21ea7080e5e1ba246ce9c9b90c1309262ca11d8e40943ed677

diff --cc src/vdbe.c
Simple merge