Add the document describing test procedures for the TCL extension build

process.  Update the Windows makefile so that it builds the TCL extensions
successfully with a default installation of Tcl8.6.

FossilOrigin-Name: 3263db9249444203b7a9a9f2b0be309c74944315dde7ed192366b709fff93f1b

diff --cc manifest
index dbe9f57581e7ff80d6c73713e32f31b177010728,81708d8dda322af36d63e1af45baf6a73186ecfc..3cdc3c3865bcc1aeceb7b922ac29c98000edb322
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Add\scomment\sto\sthe\scolumnIsGoodIndexCandidate()\sroutine\sto\srecord\sthe\sresults\nof\sa\sfailed\sexperiment.\s\sNo\schanges\sto\scode.
- D 2025-01-03T11:51:50.103
 -C Adjust\sthe\sWindows\sMakefile.msc\sso\sthat\sit\scan\sbuild\sthe\stclextension\swith\nTcl8.6\ssuccessfully.\s\sUpdates\sto\sthe\stcl-extension\stest\sprocedure\sdocument.
 -D 2025-01-04T15:51:30.848
++C Add\sthe\sdocument\sdescribing\stest\sprocedures\sfor\sthe\sTCL\sextension\sbuild\nprocess.\s\sUpdate\sthe\sWindows\smakefile\sso\sthat\sit\sbuilds\sthe\sTCL\sextensions\nsuccessfully\swith\sa\sdefault\sinstallation\sof\sTcl8.6.
++D 2025-01-04T15:52:40.069
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md e108e1e69ae8e8a59e93c455654b8ac9356a11720d3345df2a4743e9590fb20d
@@@ -2204,8 -2205,8 +2205,9 @@@ F tool/version-info.c 3b36468a90faf1bbd
  F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
  F tool/warnings.sh 49a486c5069de041aedcbde4de178293e0463ae9918ecad7539eedf0ec77a139
  F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
- P 1291b013a8c93e7001fe25783bc98d12f5f7c341d1f728e6852632e18a38af58
- R 0507e66ed59bfa5a55bc14583a9d765f
 -P 9dc805df1b1c26196ca53baa6b1b8c2f7e59e0150d02ead53228c77a63ad40f4
++P 9ee57a30a49d9813bf2669a5d8346f7e018e3fbf1792739951311a8d3a249d45 0c2cdc632f26d6acac2d508def4ecfcc97462ebcddc20c84f8847e02e42b3a1d
+ R c39856b8b1c55486d94efa9f4d6e65f7
++T +closed 0c2cdc632f26d6acac2d508def4ecfcc97462ebcddc20c84f8847e02e42b3a1d
  U drh
- Z 3304d535a779543ccf066c65753e6b08
 -Z 7ec4aefc8fdf87ac85e59e4d4ae3a188
++Z 0b107a7817bd289dd55ee148db24c6d9
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index d506d57c15678d03f80237ecc3b6ce075b86dd1e,aaa74e46f90fb9f55874f244685eafdab03405cc..f286bc29e132cac1a7e9f0da1ebedf692882fb1a
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 9ee57a30a49d9813bf2669a5d8346f7e018e3fbf1792739951311a8d3a249d45
 -0c2cdc632f26d6acac2d508def4ecfcc97462ebcddc20c84f8847e02e42b3a1d
++3263db9249444203b7a9a9f2b0be309c74944315dde7ed192366b709fff93f1b