Add lilypond support, closes #278

compiler/lilypond.vim

@@ -0,0 +1,23 @@
+if exists('g:polyglot_disabled') && index(g:polyglot_disabled, 'lilypond') != -1
+  finish
+endif
+
+" LilyPond compiler file
+" Language:     LilyPond
+" Maintainer:   Heikki Junes <hjunes@cc.hut.fi>
+" Last Change:  2004 Mar 01
+"
+" Installed As:	vim/compiler/lilypond.vim
+"
+" Only load this indent file when no other was loaded.
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "lilypond"
+
+" default make
+setlocal makeprg=lilypond\ $*
+" errorformat for lily (with columns) and gcc
+" (how to see multiple-line error messages?)
+setlocal errorformat=%f:%l:%c:\ %m,%f:%l:\ %m,In\ file\ included\ from\ %f:%l:,\^I\^Ifrom\ %f:%l%m
+"