Change the Vdbe.aMem array so that it is zero-based instead of one-based.

FossilOrigin-Name: c39081e878faccc8552141afa5732a2bf2f77570

diff --cc manifest
index 847bc79890a251e35d5241e14b1e7670e4f389b1,24f48cdd5ba3ab6f4195ff38abd159ffe40e449b..0773bab2052352b3e009aeb4e2f510d2e87420a5
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sexclusive.test\sso\sthat\sit\sworks\swith\s-DSQLITE_TEMP_STORE=3.
- D 2016-03-19T18:11:59.750
 -C Remove\san\sunreachable\sbranch.\s\sImprovements\sto\scomments.
 -D 2016-03-21T00:30:40.611
++C Change\sthe\sVdbe.aMem\sarray\sso\sthat\sit\sis\szero-based\sinstead\sof\sone-based.
++D 2016-03-21T00:38:59.802
  F Makefile.in f53429fb2f313c099283659d0df6f20f932c861f
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc df0bf9ff7f8b3f4dd9fb4cc43f92fe58f6ec5c66
@@@ -1457,7 -1457,7 +1457,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P f095341471aa822e6d556cb65512ec081c3918da
- R eda7e2fd58d6241fa97b2fe69addd6c1
- U dan
- Z fdac7ca02eef2361aeb61c0eeeaed018
 -P e07b0c47eb5a39623f5fe0e66b939bba0906691c
++P d7852c639683a1d305a1e731df3cccafa64b594b c5677ecd5cd2637d92a831ec6bd5b002f8d75626
+ R 3918e948fd7d72bc109c3b7a0fa018f3
++T +closed c5677ecd5cd2637d92a831ec6bd5b002f8d75626
+ U drh
 -Z ae546b517b9c79f405f4513ed17a526d
++Z 542f0ebd1ebe0cc42b5001043dab2846

diff --cc manifest.uuid
index 378b71e1fc00a2604da0cff6e74d3e4046efa7ca,7cf8597f257e2648b5961c4618c096d36b635dd7..d4e8a322faf29347fae71dd2b43b06e27c5ef7dc
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- d7852c639683a1d305a1e731df3cccafa64b594b
 -c5677ecd5cd2637d92a831ec6bd5b002f8d75626
++c39081e878faccc8552141afa5732a2bf2f77570