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/automake.vim

@@ -0,0 +1,15 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'automake') == -1
+
+" Vim indent file
+" Language:    	    automake
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2006-04-19
+
+if exists("b:did_indent")
+  finish
+endif
+
+" same as makefile indenting for now.
+runtime! indent/make.vim
+
+endif