Some major updates including heuristics

- Allow to define heuristics in heuristics.yaml
- Migrate all filetypes from vim beginning with "a"
- Remove enhanced cpp syntax (it was too slow to load)
- Use setf instead of set ft for setting filetype (faster)
- Override native hauristics with au!
- Add globbing of files for packages
- Replace predefined dirs with extra_dirs and ignored_dirs
- Allow to define proper order of packages with topological sort
- Fix powershell detection
- Lint and fix many packages.yaml issues
- etc etd

indent/ant.vim

@@ -0,0 +1,16 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'ant') == -1
+
+" Vim indent file
+" Language:    ANT files
+" Maintainer:  David Fishburn <fishburn@ianywhere.com>
+" Last Change: Thu May 15 2003 10:02:54 PM
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+
+" Use XML formatting rules
+runtime! indent/xml.vim
+
+endif