Very small performance improvements and size reductions in

sqlite3VdbeExec() and blobSeekToRow().

FossilOrigin-Name: 85dddf2b453b8afaf1f485b96084d31e22f97dda

diff --cc manifest
index e0848cf1228438b561031375253c06ff190e550e,fa96e1cee39b93cb9745846f4b801aa3771c032a..a8c339e79131662f37b21351e9f51ada8a040807
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Add\sthe\s"stat"\scommand\sto\skvtest.c.\s\sAlso\sadd\sthe\s--variance\soption\sto\sthe\n"init"\scommand.\s\sAdd\sthe\stool/kvtest-speed.sh\sscript\sused\sfor\sdoing\s\nperformance\stesting\son\skey/value\saccess\spatterns.
- D 2017-01-31T15:29:05.242
 -C Simplifications\sto\sblobSeekToRow().
 -D 2017-01-31T19:02:15.083
++C Very\ssmall\sperformance\simprovements\sand\ssize\sreductions\sin\s\nsqlite3VdbeExec()\sand\sblobSeekToRow().
++D 2017-01-31T19:10:42.671
  F Makefile.in 5f415e7867296d678fed2e6779aea10c1318b4bc
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc b8ca53350ae545e3562403d5da2a69cec79308da
@@@ -1549,7 -1549,7 +1549,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P bd22bf9cbe028e9811ca3afaadafd90312cb0fc9
- R 561f5ef3a58c98c17f69cad51ae91935
 -P 91eb6b628e278d20eccc647293e5b30765163e12
++P b63deed600b1a457a6960ebad5645f4de9c56e5d 495ea824093ff535734c22c3115384c08f855c02
+ R 793d15c782afd1bb1c67c16147a858a7
++T +closed 495ea824093ff535734c22c3115384c08f855c02
  U drh
- Z 35fd92fc5491c4b603aa832f4a4ebf7a
 -Z 0d3326b5592bbe49f8801dfaea3a7026
++Z c7f2b5c04f4a8cad3ed5cf73468bb400

diff --cc manifest.uuid
index 69a91341caf48aa16cb7f8294a009659d34c147d,fb73fe6210af8e4c2b0af04196ad3e6688b1f6d1..321250201a7f02da480cd9d7840ebdd3c63a3596
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- b63deed600b1a457a6960ebad5645f4de9c56e5d
 -495ea824093ff535734c22c3115384c08f855c02
++85dddf2b453b8afaf1f485b96084d31e22f97dda