Merge the non-blocking ROLLBACK changes into trunk.

FossilOrigin-Name: 9c572d424a20b0585bfac358a5d1ee5276dd05ba

diff --cc manifest
index 9583d49b64edb3e4aa38860eacb501de2fca2aed,24d2878880d8541b79c80129d413b4b65c208340..e43e6ab96e2302f9bacd252c52023037a04af6cf
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sa\sharmless\scompiler\swarning\sintroduced\sby\sthe\sprevious\scheck-in.
- D 2012-02-13T20:28:15.804
 -C Add\sthe\snew\sSQLITE_ABORT_ROLLBACK\sextended\serror\scode\sto\sbe\sreturned\sfor\nstatements\sthat\sare\scancelled\sdue\sto\sa\srollback.
 -D 2012-02-13T17:01:51.864
++C Merge\sthe\snon-blocking\sROLLBACK\schanges\sinto\strunk.
++D 2012-02-13T21:24:03.262
  F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
  F Makefile.in 3f79a373e57c3b92dabf76f40b065e719d31ac34
  F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@@ -989,7 -989,7 +989,7 @@@ F tool/tostr.awk e75472c2f98dd76e06b8c9
  F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
  F tool/warnings-clang.sh 9f406d66e750e8ac031c63a9ef3248aaa347ef2a
  F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
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++R f5be37b531ffc02ec5dfb73b01bae4f2
  U drh
- Z ade107925d4b7260ea92f951a93b4e84
 -Z 81fc65771654ca843df55065930e81f0
++Z a17a96e51ae999984897d31a6e51ca34

diff --cc manifest.uuid
index 0fa6079cc86f237364c3011494037f80cfb5d06a,67d01dda7d401a9027bbe94ddc1f1c5d8b485ebf..28f74b0a561e87b59192a239daa99e03b7e89ee2
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- a8a042a751557d06bf04455ed7629cb29adcd87f
 -549f4fd00d8325c10099b100e5202b77ee1d83ad
++9c572d424a20b0585bfac358a5d1ee5276dd05ba