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

gitportable/usr/share/vim/vim91/ftplugin/pyrex.vim

@@ -0,0 +1,32 @@
+" Vim filetype plugin file
+" Language:	Pyrex
+" Maintainer:	Marco Barisione <marco.bari@people.it>
+" URL:		http://marcobari.altervista.org/pyrex_vim.html
+" Last Change:	2012 May 18
+"		2024 Jan 14 by Vim Project (browsefilter)
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+let s:keepcpo= &cpo
+set cpo&vim
+
+" Behaves just like Python
+runtime! ftplugin/python.vim ftplugin/python_*.vim ftplugin/python/*.vim
+
+if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
+    let  b:browsefilter = "Pyrex files (*.pyx, *.pxd)\t*.pyx;*.pxd\n" .
+			\ "Python Files (*.py)\t*.py\n" .
+			\ "C Source Files (*.c)\t*.c\n" .
+			\ "C Header Files (*.h)\t*.h\n" .
+			\ "C++ Source Files (*.cpp, *.c++)\t*.cpp;*.c++\n"
+    if has("win32")
+	let b:browsefilter .= "All Files (*.*)\t*\n"
+    else
+	let b:browsefilter .= "All Files (*)\t*\n"
+    endif
+endif
+
+let &cpo = s:keepcpo
+unlet s:keepcpo