Update emacs and vi modes.

Author: nikomatsakis

src/etc/emacs/rust-mode.el

@@ -174,7 +174,7 @@
  "if" "impl" "in"
  "let" "loop"
  "match" "mod" "move" "mut"
- "priv" "proc" "pub"
+ "priv" "pub"
  "ref" "return"
  "self" "static" "struct" "super"
  "true" "trait" "type"

src/etc/vim/syntax/rust.vim

@@ -24,7 +24,7 @@ syn keyword rustKeyword continue
 syn keyword rustKeyword extern nextgroup=rustExternCrate,rustObsoleteExternMod skipwhite skipempty
 syn keyword rustKeyword fn nextgroup=rustFuncName skipwhite skipempty
 syn keyword rustKeyword for in if impl let
-syn keyword rustKeyword loop once proc pub
+syn keyword rustKeyword loop once pub
 syn keyword rustKeyword return super
 syn keyword rustKeyword unsafe virtual where while
 syn keyword rustKeyword use nextgroup=rustModPath skipwhite skipempty