Add syntax files from upstream vim repository

ftplugin/scala.vim

@@ -1,3 +1,42 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim filetype plugin file
+" Language:             Scala
+" Maintainer:           Derek Wyatt
+" URL:                  https://github.com/derekwyatt/vim-scala
+" License:              Same as Vim
+" Last Change:          02 August 2016
+" ----------------------------------------------------------------------------
+
+if exists('b:did_ftplugin') || &cp
+  finish
+endif
+let b:did_ftplugin = 1
+
+" j is fairly new in Vim, so don't complain if it's not there
+setlocal formatoptions-=t formatoptions+=croqnl
+silent! setlocal formatoptions+=j
+
+" Just like c.vim, but additionally doesn't wrap text onto /** line when
+" formatting. Doesn't bungle bulleted lists when formatting.
+if get(g:, 'scala_scaladoc_indent', 0)
+  setlocal comments=sO:*\ -,mO:*\ \ ,exO:*/,s2:/**,mb:*,ex:*/,s1:/*,mb:*,ex:*/,://
+else
+  setlocal comments=sO:*\ -,mO:*\ \ ,exO:*/,s1:/**,mb:*,ex:*/,s1:/*,mb:*,ex:*/,://
+endif
+setlocal commentstring=//\ %s
+
+setlocal shiftwidth=2 softtabstop=2 expandtab
+
+setlocal include='^\s*import'
+setlocal includeexpr='substitute(v:fname,"\\.","/","g")'
+
+setlocal path+=src/main/scala,src/test/scala
+setlocal suffixesadd=.scala
+
+" vim:set sw=2 sts=2 ts=8 et:
+
+endif
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'scala') == -1
   
 " Vim filetype plugin