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

gitportable/mingw64/share/doc/git-doc/signoff-option.adoc

@@ -0,0 +1,18 @@
+ifdef::git-commit[]
+`-s`::
+endif::git-commit[]
+`--signoff`::
+`--no-signoff`::
+	Add a `Signed-off-by` trailer by the committer at the end of the commit
+	log message.  The meaning of a signoff depends on the project
+	to which you're committing.  For example, it may certify that
+	the committer has the rights to submit the work under the
+	project's license or agrees to some contributor representation,
+	such as a Developer Certificate of Origin.
+	(See https://developercertificate.org for the one used by the
+	Linux kernel and Git projects.)  Consult the documentation or
+	leadership of the project to which you're contributing to
+	understand how the signoffs are used in that project.
++
+The `--no-signoff` option can be used to countermand an earlier `--signoff`
+option on the command line.