made the pack completely portable and wrote relevent bat files to go with it

gitportable/mingw64/share/doc/git-doc/RelNotes/2.36.2.adoc

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+Git v2.36.2 Release Notes
+=========================
+
+This release merges up the fixes that appear in v2.30.5, v2.31.4,
+v2.32.3, v2.33.4, v2.34.4 and v2.35.4 to address the security
+issue CVE-2022-29187; see the release notes for these versions
+for details.
+
+Apart from that, this maintenance release is primarily to merge down
+updates to the build and CI procedures from the 'master' front, in
+order to ensure that we can cut healthy maintenance releases in the
+future.  It also contains a handful of small and trivially-correct
+bugfixes.
+
+Fixes since v2.36.1
+-------------------
+
+ * Fixes real problems noticed by gcc 12 and works around false
+   positives.
+
+ * Update URL to the gitk repository.
+
+ * The "--current" option of "git show-branch" should have been made
+   incompatible with the "--reflog" mode, but this was not enforced,
+   which has been corrected.
+
+ * "git archive --add-file=<path>" picked up the raw permission bits
+   from the path and propagated to zip output in some cases, without
+   normalization, which has been corrected (tar output did not have
+   this issue).
+
+ * A bit of test framework fixes with a few fixes to issues found by
+   valgrind.
+
+ * macOS CI jobs have been occasionally flaky due to tentative version
+   skew between perforce and the homebrew packager.  Instead of
+   failing the whole CI job, just let it skip the p4 tests when this
+   happens.
+
+ * The commit summary shown after making a commit is matched to what
+   is given in "git status" not to use the break-rewrite heuristics.
+
+ * Avoid problems from interaction between malloc_check and address
+   sanitizer.
+
+ * "git rebase --keep-base <upstream> <branch-to-rebase>" computed the
+   commit to rebase onto incorrectly, which has been corrected.
+
+ * The path taken by "git multi-pack-index" command from the end user
+   was compared with path internally prepared by the tool withut first
+   normalizing, which lead to duplicated paths not being noticed,
+   which has been corrected.
+
+ * "git clone --origin X" leaked piece of memory that held value read
+   from the clone.defaultRemoteName configuration variable, which has
+   been plugged.