Simplifications and performance optimizations for the RTree extension.

FossilOrigin-Name: 04a333f5faf6b90592f1f69889ac6c28949955e186f39037cd639480b06feae8

diff --cc manifest
index 0a0e584fdbc81812c5866dbb3a8cd0030204b03b,20f266cfe55d9fc7d6223e8969007b97b32bc872..c19173e647f82a1f3b2c80920e820f3ce677e5bb
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Drop\ssupport\sfor\sthe\sview-scan\soptimization\s(check-in\s[609fbb94b8f01d67])\sas\nit\swas\scausing\smultiple\sperformance\sregressions.\s\sIn\sits\splace,\sreduce\sthe\nestimated\srow\scount\sfor\sDISTINCT\ssubsqueries\sby\sa\sfactor\sof\s8.
- D 2023-09-15T19:51:18.202
 -C Reduce\sthe\snumber\sof\scalls\sto\ssqlite3_mprintf()\smade\sby\sRTree.
 -D 2023-09-14T01:46:57.921
++C Simplifications\sand\sperformance\soptimizations\sfor\sthe\sRTree\sextension.
++D 2023-09-15T20:28:27.298
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -2121,9 -2119,8 +2121,9 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P ce339046416e9ddeffe77f71a8bfb8c5b302160c3207f919aebd62902618ed59 0738386d7c505a98768ddaff7ff1fc76f115882d92d6f84bf136b4aa2caad8b8
- R 38093a5d0a73ed2782b293b0009addb5
- T +closed 0738386d7c505a98768ddaff7ff1fc76f115882d92d6f84bf136b4aa2caad8b8
 -P b3049a1d3dbdd63c471499c2f6b417655defe9ad90228e7cc722f5be877aae01
 -R 4a0337d657a84054652611ea00610d85
++P f911f1c4977fbcae041243955cf2b98d8cc8baa337885a69be0f2b9bd2efa6f3 f158b7d4917e0951fbb86a6f438abcb618d8602566fa54bf04c05a37f3a73513
++R 0b036be7642252777724a458f0867e79
++T +closed f158b7d4917e0951fbb86a6f438abcb618d8602566fa54bf04c05a37f3a73513
  U drh
- Z 1f4648241ce7ff62054de9df5d869201
 -Z f26f4eceb289ba5f454adb53748437fb
++Z cad044234f7387007cc2851aae092c34
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 937a9f739dea3d34139b53538942d59d55b92066,d846ddeca7afb80c6360ff25ddb18a53bfa9ffdd..7c7136b025e939955682284a48c8ed0f578457ae
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- f911f1c4977fbcae041243955cf2b98d8cc8baa337885a69be0f2b9bd2efa6f3
 -f158b7d4917e0951fbb86a6f438abcb618d8602566fa54bf04c05a37f3a73513
++04a333f5faf6b90592f1f69889ac6c28949955e186f39037cd639480b06feae8