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

gitportable/usr/share/vim/vim91/syntax/gitsendemail.vim

@@ -0,0 +1,23 @@
+" Vim syntax file
+" Language:	git send-email message
+" Maintainer:	Tim Pope
+" Filenames:	.gitsendemail.*
+" Last Change:	2016 Aug 29
+
+if exists("b:current_syntax")
+  finish
+endif
+
+runtime! syntax/mail.vim
+unlet! b:current_syntax
+syn include @gitsendemailDiff syntax/diff.vim
+syn region gitsendemailDiff start=/\%(^diff --\%(git\|cc\|combined\) \)\@=/ end=/^-- %/ fold contains=@gitsendemailDiff
+
+syn case match
+
+syn match   gitsendemailComment "\%^From.*#.*"
+syn match   gitsendemailComment "^GIT:.*"
+
+hi def link gitsendemailComment Comment
+
+let b:current_syntax = "gitsendemail"