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

syntax/grub.vim

@@ -0,0 +1,97 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'grub') == -1
+
+" Vim syntax file
+" Language:             grub(8) configuration file
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2006-04-19
+
+if exists("b:current_syntax")
+  finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+syn keyword grubTodo          contained TODO FIXME XXX NOTE
+
+syn region  grubComment       display oneline start='^#' end='$'
+                              \ contains=grubTodo,@Spell
+
+syn match   grubDevice        display
+                              \ '(\([fh]d\d\|\d\+\|0x\x\+\)\(,\d\+\)\=\(,\l\)\=)'
+
+syn match   grubBlock         display '\(\d\+\)\=+\d\+\(,\(\d\+\)\=+\d\+\)*'
+
+syn match   grubNumbers       display '+\=\<\d\+\|0x\x\+\>'
+
+syn match   grubBegin         display '^'
+                              \ nextgroup=@grubCommands,grubComment skipwhite
+
+syn cluster grubCommands      contains=grubCommand,grubTitleCommand
+
+syn keyword grubCommand       contained default fallback hiddenmenu timeout
+
+syn keyword grubTitleCommand  contained title nextgroup=grubTitle skipwhite
+
+syn match   grubTitle         contained display '.*'
+
+syn keyword grubCommand       contained bootp color device dhcp hide ifconfig
+                              \ pager partnew parttype password rarp serial setkey
+                              \ terminal tftpserver unhide blocklist boot cat
+                              \ chainloader cmp configfile debug displayapm
+                              \ displaymem embed find fstest geometry halt help
+                              \ impsprobe initrd install ioprobe kernel lock
+                              \ makeactive map md5crypt module modulenounzip pause
+                              \ quit reboot read root rootnoverify savedefault setup
+                              \ testload testvbe uppermem vbeprobe
+
+syn keyword grubSpecial       saved
+
+syn match   grubBlink         display 'blink-'
+syn keyword grubBlack         black
+syn keyword grubBlue          blue
+syn keyword grubGreen         green
+syn keyword grubRed           red
+syn keyword grubMagenta       magenta
+syn keyword grubBrown         brown yellow
+syn keyword grubWhite         white
+syn match   grubLightGray     display 'light-gray'
+syn match   grubLightBlue     display 'light-blue'
+syn match   grubLightGreen    display 'light-green'
+syn match   grubLightCyan     display 'light-cyan'
+syn match   grubLightRed      display 'light-red'
+syn match   grubLightMagenta  display 'light-magenta'
+syn match   grubDarkGray      display 'dark-gray'
+
+hi def link grubComment       Comment
+hi def link grubTodo          Todo
+hi def link grubNumbers       Number
+hi def link grubDevice        Identifier
+hi def link grubBlock         Identifier
+hi def link grubCommand       Keyword
+hi def link grubTitleCommand  grubCommand
+hi def link grubTitle         String
+hi def link grubSpecial       Special
+
+hi def      grubBlink         cterm=inverse
+hi def      grubBlack         ctermfg=Black ctermbg=White guifg=Black guibg=White
+hi def      grubBlue          ctermfg=DarkBlue guifg=DarkBlue
+hi def      grubGreen         ctermfg=DarkGreen guifg=DarkGreen
+hi def      grubRed           ctermfg=DarkRed guifg=DarkRed
+hi def      grubMagenta       ctermfg=DarkMagenta guifg=DarkMagenta
+hi def      grubBrown         ctermfg=Brown guifg=Brown
+hi def      grubWhite         ctermfg=White ctermbg=Black guifg=White guibg=Black
+hi def      grubLightGray     ctermfg=LightGray guifg=LightGray
+hi def      grubLightBlue     ctermfg=LightBlue guifg=LightBlue
+hi def      grubLightGreen    ctermfg=LightGreen guifg=LightGreen
+hi def      grubLightCyan     ctermfg=LightCyan guifg=LightCyan
+hi def      grubLightRed      ctermfg=LightRed guifg=LightRed
+hi def      grubLightMagenta  ctermfg=LightMagenta guifg=LightMagenta
+hi def      grubDarkGray      ctermfg=DarkGray guifg=DarkGray
+
+let b:current_syntax = "grub"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+endif