Ensure that all cursors have their positions saved prior to rolling back

a savepoint.

FossilOrigin-Name: 8e03a8e95fada5c24d369672a71f6e02288051da

diff --cc manifest
index 9d4630c8323d62712e2ebc7dae342cb9459b81c4,4cc36f422d8209e9b4ccb2c45dcd2ea03fce5b49..a07bc6f33275b5c66e8dae4fae9046e82bf4bc3c
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sissues\sin\sthe\ssha1\sextension\sseen\swith\sMSVC.
- D 2017-02-02T19:24:05.672
 -C This\sis\san\sexperimental\spatch\sthat\sensures\sthat\sall\scursors\shave\stheir\sposition\nsaved\sprior\sto\sstarting\sa\sROLLBACK\sTO.
 -D 2017-02-02T00:46:55.000
++C Ensure\sthat\sall\scursors\shave\stheir\spositions\ssaved\sprior\sto\srolling\sback\na\ssavepoint.
++D 2017-02-02T20:32:28.731
  F Makefile.in 5f415e7867296d678fed2e6779aea10c1318b4bc
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc ba953c8921fc7e18333f61898007206de7e23964
@@@ -1552,7 -1552,10 +1552,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
--P 0c66cf0f0a9ada2ddcb8d61001ef791b86226416
- R 531254e92dc453ecbaf40de729caeadd
- U mistachkin
- Z 7da98715c0c2c155a034ba4275d6d8fe
 -R 329580c21139f900f64001f6acfc9557
 -T *branch * savepoint-rollback
 -T *sym-savepoint-rollback *
 -T -sym-trunk *
++P 5a0da77c22ebc7db5e63b1520d30f3ad97b9bb3b 01d97e5b6502b1811b52a681f445e1aaae6c0ee6
++R f67fbd165c607c8ab8b9fb8cff6e4d0d
++T +closed 01d97e5b6502b1811b52a681f445e1aaae6c0ee6
+ U drh
 -Z 5087946e64391fb6ac59f69d722efdd6
++Z d16d6898d272ff11e9984476ae1d9ef3

diff --cc manifest.uuid
index 9e12c1be984452f618e7f5df536e0d72364ed666,9d5ad1c9815081c6978df7d784b1c55c2c3389c9..792cc0b3a3fb8c88de30026c2ea6c9b7b0a7212b
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 5a0da77c22ebc7db5e63b1520d30f3ad97b9bb3b
 -01d97e5b6502b1811b52a681f445e1aaae6c0ee6
++8e03a8e95fada5c24d369672a71f6e02288051da