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

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

@@ -0,0 +1,23 @@
+" Vim compiler file
+" Compiler:	FreeBASIC Compiler
+" Maintainer:	Doug Kearns <dougkearns@gmail.com>
+" Last Change:	2024 Apr 03
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "fbc"
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+CompilerSet makeprg=fbc
+CompilerSet errorformat=%-G%.%#Too\ many\ errors\\,\ exiting,
+		       \%f(%l)\ %tarning\ %n(%\\d%\\+):\ %m,
+                       \%E%f(%l)\ error\ %n:\ %m,
+		       \%-Z%p^,
+		       \%-C%.%#,
+		       \%-G%.%#
+
+let &cpo = s:cpo_save
+unlet s:cpo_save