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

gitportable/usr/share/vim/vim91/compiler/fpc.vim

@@ -0,0 +1,14 @@
+" Vim compiler file
+" Compiler:     FPC 2.1
+" Maintainer:   Jaroslaw Blasiok <jaro3000@o2.pl>
+" Last Change:  2005 October 07
+"               2024 Apr 03 by The Vim Project (removed :CompilerSet definition)
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "fpc"
+
+" NOTE: compiler must be run with -vb to write whole source path, not only file
+" name.
+CompilerSet errorformat=%f(%l\\,%c)\ %m