Avoid resetting the shared-cache schema when on of the connections using

the shared cache closes.  Delay resetting the schema until the last connection
closes.

FossilOrigin-Name: 635e3a762ddeb1f952f66a08c1d4d53e3f42c9eb

diff --cc manifest
index 604ec87337066880ccef01388b0b0243bce01d97,9c4e8968687cff278f216f75a54a6626ef8a64ad..8b9d2a426e65bb0962efc7ea27619171b7d2ab4a
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Add\ssqlite3_quota_ferror()\sand\ssqlite3_quota_file_available()\sinterfaces\sto\ntest_quota.c.\s\sChange\ssqlite3_quota_fwrite()\sto\suse\sa\sconst\sinput\sbuffer.
- D 2012-06-05T13:56:15.352
 -C Make\ssure\sthe\sIndex.azColl\spointers\sdo\snot\spoint\sto\sconnection-specific\smemory.\nAlso,\sremove\san\sunnecessary\sreinitialization\sto\ssqlite3.pDfltColl.
 -D 2012-06-06T10:56:22.535
++C Avoid\sresetting\sthe\sshared-cache\sschema\swhen\son\sof\sthe\sconnections\susing\nthe\sshared\scache\scloses.\s\sDelay\sresetting\sthe\sschema\suntil\sthe\slast\sconnection\ncloses.
++D 2012-06-06T19:01:13.928
  F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
  F Makefile.in 4f37eb61be9d38643cdd839a74b8e3bad724cfcf
  F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@@ -1004,7 -1005,7 +1005,7 @@@ F tool/tostr.awk e75472c2f98dd76e06b8c9
  F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
  F tool/warnings-clang.sh a8a0a3babda96dfb1ff51adda3cbbf3dfb7266c2
  F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
- P 70c419a434be77b042a23174483d6a411899eb5d
- R 6f34bdd03e1922ea3b6cb56fd9309a2c
 -P 42338e9e6979bb497823527f8f39e96f63623c59
++P 61669c95859e187618fb2fb4249306a947ae8d26 c469850b2eb61a63150cc5fc7d2fe98f0b5abffb
+ R 4e8ba0ec11cbdf49789a46888b404344
  U drh
- Z 1b017ff1370375c5086bff54a1d45078
 -Z a16a791ba70d8a38d9ba353fda40937d
++Z 7052addf7652de59fa1313dd54313af2

diff --cc manifest.uuid
index 9d397b734fcba4f3ce2aafbf1282150c06c649f2,52f568de93676316336a8b4c828ebb4b435abc13..c20062a6ca3341d9780e0ae27e5cbdfe2a13949c
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 61669c95859e187618fb2fb4249306a947ae8d26
 -c469850b2eb61a63150cc5fc7d2fe98f0b5abffb
++635e3a762ddeb1f952f66a08c1d4d53e3f42c9eb