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

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

@@ -0,0 +1,35 @@
+" Vim Compiler File
+" Compiler:	ant
+" Maintainer:	Johannes Zellner <johannes@zellner.org>
+" Last Change:	Mi, 13 Apr 2005 22:50:07 CEST
+"		2024 Apr 03 by The Vim Project (removed :CompilerSet definition)
+
+if exists("current_compiler")
+    finish
+endif
+let current_compiler = "ant"
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+CompilerSet makeprg=ant
+
+" first  line:
+"     ant with jikes +E, which assumes  the following
+"     two property lines in your 'build.xml':
+"
+"         <property name = "build.compiler"       value = "jikes"/>
+"         <property name = "build.compiler.emacs" value = "true"/>
+"
+" second line:
+"     ant with javac
+"
+" note that this will work also for tasks like [wtkbuild]
+"
+CompilerSet errorformat=\ %#[%.%#]\ %#%f:%l:%v:%*\\d:%*\\d:\ %t%[%^:]%#:%m,
+    \%A\ %#[%.%#]\ %f:%l:\ %m,%-Z\ %#[%.%#]\ %p^,%C\ %#[%.%#]\ %#%m
+
+" ,%-C%.%#
+
+let &cpo = s:cpo_save
+unlet s:cpo_save