Allow percentile() and median() to act as window functions.

FossilOrigin-Name: 94cf96af8fee55449080655bddf81cbf5c078a02d7bb5dd7e4903b36f83a8c07

diff --cc manifest
index 25793c424455de1aa333c7fe1cd1c3b0320b2087,21b3220b4771e6a67e31b77c1bd2f709a0ebb27a..959108d9fe6be2e53a7e44f52c3238480c620f1e
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Do\snot\sfail\sthe\somittest\sif\sICU\slibraries\sare\snot\sinstalled.
- D 2024-08-30T17:33:25.286
 -C Still\smore\stest\scases.
 -D 2024-08-31T17:50:06.875
++C Allow\spercentile()\sand\smedian()\sto\sact\sas\swindow\sfunctions.
++D 2024-08-31T18:08:31.388
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -2211,8 -2211,8 +2211,9 @@@ F vsixtest/vsixtest.tcl 6195aba1f12a5e1
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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+ R 55d55ff8a79d8904a0d256c79a96924e
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  U drh
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 -Z 79dbcf8ff805bbacf34d3a6772c416df
++Z debd110319d009b555173f7d44f9f322
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 0044aadb49f01dfe97b8e5a19ec9c3c4c76290fc,06468111d467fee0676efb4b06d50423d656c6ae..7061b49df16a5ebe5affa89bc0f8920e2b5c3d87
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- ddc55efd2d59df3f20743b0533550436da945453c069025a3f871d28d40e13d4
 -f09904608195dac38172b0dd4dcab3190f33c116d468beff27f913a7433b400e
++94cf96af8fee55449080655bddf81cbf5c078a02d7bb5dd7e4903b36f83a8c07