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

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

@@ -0,0 +1,16 @@
+" Vim compiler file
+" Compiler:		bcc - Borland C
+" Maintainer:	Emile van Raaij (eraaij@xs4all.nl)
+" Last Change:	2004 Mar 27
+"		2024 Apr 03 by The Vim Project (removed :CompilerSet definition)
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "bcc"
+
+" A workable errorformat for Borland C
+CompilerSet errorformat=%*[^0-9]%n\ %f\ %l:\ %m
+
+" default make
+CompilerSet makeprg=make