Move tab settings to ftplugin. Closes derekwyatt#49

Agreed that these are not usually in the indent files, typically overridden in
`after/ftplugin` or `autocmd FileType`, so this makes that possible.

'tabstop' is best left alone when the others are set along with 'expandtab'.

References derekwyatt#60.

Author: ches

ftplugin/scala.vim

@@ -10,15 +10,19 @@ if exists('b:did_ftplugin') || &cp
 endif
 let b:did_ftplugin = 1
 
-setlocal formatoptions+=ro
+" 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.
 setlocal comments=sO:*\ -,mO:*\ \ ,exO:*/,s1:/**,mb:*,ex:*/,s1:/*,mb:*,ex:*/,://
 setlocal commentstring=//\ %s
 
-let &l:include = '^\s*import'
-let &l:includeexpr = 'substitute(v:fname,"\\.","/","g")'
+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

indent/scala.vim

@@ -9,13 +9,9 @@ if exists("b:did_indent")
 endif
 let b:did_indent = 1
 
+setlocal autoindent
 setlocal indentexpr=GetScalaIndent()
 setlocal indentkeys=0{,0},0),!^F,<>>,o,O,e,=case,<CR>
-setlocal autoindent
-setlocal softtabstop=2
-setlocal tabstop=2
-setlocal shiftwidth=2
-setlocal expandtab
 
 if exists("*GetScalaIndent")
   finish