[vimrc] Add rust support. Add utf16 support, Fix " pair matching

vimrc

@@ -112,6 +112,7 @@ if has("unix") || has("mac")
         Plugin 'godlygeek/tabular'
         Plugin 'tikhomirov/vim-glsl'
         Plugin 'beyondmarc/hlsl.vim'
+        Plugin 'rust-lang/rust.vim'
         Plugin 'mzlogin/vim-smali'
         Plugin 'jamessan/vim-gnupg'
         Plugin 'petRUShka/vim-opencl'
@@ -286,7 +287,7 @@ set backspace=indent,eol,start
 set scrolloff=10
 set scrolljump=10
 set showmatch
-set matchpairs=":"
+set matchpairs=\":\"
 set matchpairs+=(:)
 set matchpairs+={:}
 set matchpairs+=[:]
@@ -375,7 +376,7 @@ set nolinebreak
 set encoding=utf-8
 set termencoding=utf-8
 set fileencoding=utf-8
-set fileencodings=utf-8,latin1,cp1251,koi8-r
+set fileencodings=utf-8,latin1,cp1251,koi8-r,utf-16le
 "[Use UNIX, DOS, MAC FileType]"
 set fileformat=unix
 set fileformats=unix,mac,dos