Slightly faster and more precise floating-point to decimal conversion.

See [forum:/forumpost/d1387c3979c7f557|forum thread d1387c3979c7f557] for
discussion.

FossilOrigin-Name: 6dea6f4738fc7d003183e94f08bd95181f23e165a966882c0bdc64708a05a607

diff --cc manifest
index e6f9823458d061490c7b266ce5d57514f1f24a42,560f711aaa1bc6cad44359aded801c6ab0c50f2c..58e5915b7312d792c39c862a30fab6ae0e9d8747
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sharmless\scompiler\swarnings\sand\sa\scode\sindentation\serror.
- D 2023-02-23T14:43:15.500
 -C Fix\san\sincorrect\soptimization\sthat\swas\sattempted\sas\spart\sof\ncheck-in\s[18de3a8e6b431a07].
 -D 2023-02-24T01:08:35.334
++C Slightly\sfaster\sand\smore\sprecise\sfloating-point\sto\sdecimal\sconversion.\nSee\s[forum:/forumpost/d1387c3979c7f557|forum\sthread\sd1387c3979c7f557]\sfor\ndiscussion.
++D 2023-02-24T11:54:40.435
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -2046,8 -2046,8 +2046,9 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P 7ee22f95e7a7d8650f961f20e304e56c7813e624f05655d7392ca9347748270f
- R 6f3dc9114a2c05702b3aef7d84d0887b
 -P 32b0ba0d27481d85a4b0037ec36befcbffecdec75891eba58569acb160045553
++P de6c5c6bb49a0beca793cdc0462da2c17bb05f3292e08dd815be29b45b59a8fb f32055e8110a2eac6c9e26d1d1e620f0668bcb475d49d309dc549cea05e1e582
+ R d1a241fa3d7686eec8ef50c8409ad626
++T +closed f32055e8110a2eac6c9e26d1d1e620f0668bcb475d49d309dc549cea05e1e582
  U drh
- Z ad82adef5ba3f74b5f1d1691fda9e306
 -Z 23dd6be15d54b437c81982a9d1edbb20
++Z bef52b6fcdf6ca2cb08784252d92c2c0
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 1982ec0f0e1dbcf24c2e2f3d52cf3bcaa014ee4c,7e680c44f23ef9c48f48b91d302e3618defd6120..aeef2fe36b75e2e3371cb1e92b87d0ac8a108e26
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- de6c5c6bb49a0beca793cdc0462da2c17bb05f3292e08dd815be29b45b59a8fb
 -f32055e8110a2eac6c9e26d1d1e620f0668bcb475d49d309dc549cea05e1e582
++6dea6f4738fc7d003183e94f08bd95181f23e165a966882c0bdc64708a05a607