Add the SQLITE_IOCAP_SUBPAGE_READ bit to the possible returns values

from xDeviceCharacteristics method of the system-IO abstract class.  The
direct-overflow-read optimization is disabled for any VFS that does not
set this bit.  The bit is set for standard VFSes.

FossilOrigin-Name: 6e7d498cda1d8fa76f3efac0ee0540dd8241db75e85b863097cab2ed530aabb0

diff --cc manifest
index e6b9e058404c0af75fb6db51e2e0b37cc7e03232,3a2a48bdaa7a114bcaeeb53726e173f874e60746..dd3c34e8110fffd07113ef1451cf434a59072590
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Do\snot\stypedef\sTcl_Size\sif\sit\sis\salready\s#defined.
- D 2024-10-22T16:19:14.101
 -C Rename\sto\sSQLITE_IOCAP_SUBPAGE_READ.
 -D 2024-10-22T18:26:03.401
++C Add\sthe\sSQLITE_IOCAP_SUBPAGE_READ\sbit\sto\sthe\spossible\sreturns\svalues\nfrom\sxDeviceCharacteristics\smethod\sof\sthe\ssystem-IO\sabstract\sclass.\s\sThe\ndirect-overflow-read\soptimization\sis\sdisabled\sfor\sany\sVFS\sthat\sdoes\snot\nset\sthis\sbit.\s\sThe\sbit\sis\sset\sfor\sstandard\sVFSes.
++D 2024-10-22T19:33:20.597
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -2219,8 -2219,8 +2219,9 @@@ F vsixtest/vsixtest.tcl 6195aba1f12a5e1
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P e2bd3219d9f7bab377ebcfa9a737ca59899c68dad1e3d1d16347bbfdd25652ee
- R ca8802466a5e5918921ffde8ccadae70
 -P f50ae00ce9ff572e6bd5e2788602ba356383526ab7289622a32fbf52926c6df0
++P 53491688cf622ca317b3ff56156e601c2bdfffc94e4fe471ca82d5ba1d9e875f dd446ef1816f4e95ce29de0b3841dd0a6c983646fd2dd271c2db8f3263478164
+ R ca0e4d7e96f02509781264c3f3c418db
++T +closed dd446ef1816f4e95ce29de0b3841dd0a6c983646fd2dd271c2db8f3263478164
  U drh
- Z ec07baffb11da349364a8e022541c4d6
 -Z d00e64e05989e514a073b51697b3ec37
++Z c62b27a13345423a196a9df8f7a1e878
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 36baf2fb8a2077194fe05366cce2d6b653a9d6f2,bc89b0f2b42bbfa5562488e652872f78a036a791..8982839893c9cb87efb380430e19892564bcc3d7
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 53491688cf622ca317b3ff56156e601c2bdfffc94e4fe471ca82d5ba1d9e875f
 -dd446ef1816f4e95ce29de0b3841dd0a6c983646fd2dd271c2db8f3263478164
++6e7d498cda1d8fa76f3efac0ee0540dd8241db75e85b863097cab2ed530aabb0