Remove the xShmOpen method from the VFS. Shared-memory is opened automatically

by a call to xShmMap.  Rename the xShmClose method to xShmUnmap.

FossilOrigin-Name: 2b68e50268412599576c86ae70b830d0388cb35c

diff --cc manifest
index 11f38150d0ac294efe8060b101d75ddc8307acce,606840e4179624770e0040146202ad9be2663f87..754d225879bbdd7c65e7d06a37fe73d64180dcd2
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,8 +1,8 @@@
- C Fixes\sto\sthe\spcache10\sand\spcache90\spermutations.
- D 2010-07-13T14:22:40
+ -----BEGIN PGP SIGNED MESSAGE-----
+ Hash: SHA1
+ 
 -C Change\sthe\sname\sof\sthe\sxShmClose\sVFS\smethod\sto\sxShmUnmap,\severywhere.
 -D 2010-07-14T00:14:31
++C Remove\sthe\sxShmOpen\smethod\sfrom\sthe\sVFS.\s\sShared-memory\sis\sopened\sautomatically\nby\sa\scall\sto\sxShmMap.\s\sRename\sthe\sxShmClose\smethod\sto\sxShmUnmap.
++D 2010-07-14T00:22:36
  F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
  F Makefile.in ec08dc838fd8110fe24c92e5130bcd91cbb1ff2e
  F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@@ -834,7 -837,14 +837,14 @@@ F tool/speedtest2.tcl ee2149167303ba8e9
  F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
  F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
  F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
- P 05ac2548652f3c9aa358289700b0b4c7fc22486d
- R d7ea8bae5d34f266c6513da1f61674ff
- U dan
- Z a4fee7d380a1fd69eda8299369e35825
 -P 6336de7aa96a6e1e68cc123e5d5f485d790d95a2
++P 597d40fa529073123a50ae6afc762c59404f8f5f c2d27cf51d33e6f38bab37008d39074051f75274
+ R ed9e8ba444308d86203809c921582295
+ U drh
 -Z ab55ba5726586911bf21a2d00d1bf9f3
++Z 76541e7ad3808e0604906bf1fc532690
+ -----BEGIN PGP SIGNATURE-----
+ Version: GnuPG v1.4.6 (GNU/Linux)
+ 
 -iD8DBQFMPQFqoxKgR168RlERAg+uAJ9DAAD3nEM/VCOWa4ZbILGJxqK4vgCeLpos
 -qbavHCgozBPyK/gW7mjQJ+c=
 -=fpWX
++iD8DBQFMPQNPoxKgR168RlERAioBAJ9xlZcJfJlK34lIspobQYDe842CLQCdFqz0
++PexiupCstye/oPNnjaqjdbY=
++=AS0q
+ -----END PGP SIGNATURE-----

diff --cc manifest.uuid
index 0638988b8eb7683cd66fe08597872bb76ba658a3,87a7f0fa69706468ecaeb2a018a774f55a45a863..e2dfbeba0cb2aa58620f1a38d9b5c886985252d4
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 597d40fa529073123a50ae6afc762c59404f8f5f
 -c2d27cf51d33e6f38bab37008d39074051f75274
++2b68e50268412599576c86ae70b830d0388cb35c