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

ftplugin/aap.vim

@@ -0,0 +1,29 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'aap') == -1
+
+" Vim filetype plugin file
+" Language:	Aap recipe
+" Maintainer:	Bram Moolenaar <Bram@vim.org>
+" Last Change:	2013 Apr 05
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+
+" Don't load another plugin for this buffer
+let b:did_ftplugin = 1
+
+" Reset 'formatoptions', 'comments' and 'expandtab' to undo this plugin.
+let b:undo_ftplugin = "setl fo< com< et<"
+
+" Set 'formatoptions' to break comment lines but not other lines,
+" and insert the comment leader when hitting <CR> or using "o".
+setlocal fo-=t fo+=croql
+
+" Set 'comments' to format dashed lists in comments.
+setlocal comments=s:#\ -,m:#\ \ ,e:#,n:#,fb:-
+
+" Expand tabs to spaces to avoid trouble.
+setlocal expandtab
+
+endif