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

gitportable/usr/share/vim/vim91/keymap/croatian.vim

@@ -0,0 +1,16 @@
+let s:encoding = &enc
+if s:encoding == 'latin1'
+    if has("unix")
+	let s:encoding = 'iso-8859-2'
+    else
+	let s:encoding = 'cp1250'
+    endif
+endif
+
+if s:encoding == 'utf-8'
+	source <sfile>:p:h/croatian_utf-8.vim
+elseif s:encoding == 'cp1250'
+	source <sfile>:p:h/croatian_cp1250.vim
+else
+	source <sfile>:p:h/croatian_iso-8859-2.vim
+endif