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

gitportable/mingw64/share/doc/git-doc/RelNotes/1.7.3.adoc

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+Git v1.7.3 Release Notes
+========================
+
+Updates since v1.7.2
+--------------------
+
+ * git-gui, now at version 0.13.0, got various updates and a new
+   maintainer, Pat Thoyts.
+
+ * Gitweb allows its configuration to change per each request; it used to
+   read the configuration once upon startup.
+
+ * When git finds a corrupt object, it now reports the file that contains
+   it.
+
+ * "git checkout -B <it>" is a shorter way to say "git branch -f <it>"
+   followed by "git checkout <it>".
+
+ * When "git checkout" or "git merge" refuse to proceed in order to
+   protect local modification to your working tree, they used to stop
+   after showing just one path that might be lost.  They now show all,
+   in a format that is easier to read.
+
+ * "git clean" learned "-e" ("--exclude") option.
+
+ * Hunk headers produced for C# files by "git diff" and friends show more
+   relevant context than before.
+
+ * diff.ignoresubmodules configuration variable can be used to squelch the
+   differences in submodules reported when running commands (e.g. "diff",
+   "status", etc.) at the superproject level.
+
+ * http.useragent configuration can be used to lie who you are to your
+   restrictive firewall.
+
+ * "git rebase --strategy <s>" learned "-X" option to pass extra options
+   that are understood by the chosen merge strategy.
+
+ * "git rebase -i" learned "exec" that you can insert into the insn sheet
+   to run a command between its steps.
+
+ * "git rebase" between branches that have many binary changes that do
+   not conflict should be faster.
+
+ * "git rebase -i" peeks into rebase.autosquash configuration and acts as
+   if you gave --autosquash from the command line.
+
+
+Also contains various documentation updates.
+
+
+Fixes since v1.7.2
+------------------
+
+All of the fixes in v1.7.2.X maintenance series are included in this
+release, unless otherwise noted.
+
+ * "git merge -s recursive" (which is the default) did not handle cases
+   where a directory becomes a file (or vice versa) very well.
+
+ * "git fetch" and friends were accidentally broken for url with "+" in
+   its path, e.g. "git://git.gnome.org/gtk+".
+
+ * "git fetch $url" (i.e. without refspecs) was broken for quite some
+   time, if the current branch happen to be tracking some remote.
+
+ * "git ls-tree dir dirgarbage", when "dir" was a directory,
+   incorrectly recursed into "dir".
+
+ * "git note remove" created unnecessary extra commit when named object
+   did not have any note to begin with.
+
+ * "git rebase" did not work well if you had diff.noprefix configured.
+
+ * "git -c foo=bar subcmd" did not work well for subcmd that is not
+   implemented as a built-in command.