Update editor syntax files for isize/usize.

Yay, syntax highlighting.

src/etc/emacs/rust-mode.el

@@ -189,7 +189,7 @@
     "u64" "i64"
 
     "f32" "f64"
-    "float" "int" "uint"
+    "float" "int" "uint" "isize" "usize"
     "bool"
     "str" "char"))
 

src/etc/gedit/share/gtksourceview-3.0/language-specs/rust.lang

@@ -79,7 +79,9 @@
     <context id="types" style-ref="type">
 		<keyword>bool</keyword>
 		<keyword>int</keyword>
+		<keyword>isize</keyword>
 		<keyword>uint</keyword>
+		<keyword>usize</keyword>
 		<keyword>i8</keyword>
 		<keyword>i16</keyword>
 		<keyword>i32</keyword>

src/etc/kate/rust.xml

@@ -91,7 +91,9 @@
 	<list name="types">
 		<item> bool </item>
 		<item> int </item>
+		<item> isize </item>
 		<item> uint </item>
+		<item> usize </item>
 		<item> i8 </item>
 		<item> i16 </item>
 		<item> i32 </item>

src/etc/vim/syntax/rust.vim

@@ -59,7 +59,7 @@ syn match rustMacroVariable "$\w\+"
 syn keyword   rustReservedKeyword alignof be do offsetof priv pure sizeof typeof unsized yield abstract final override macro
 
 " Built-in types {{{2
-syn keyword   rustType        int uint float char bool u8 u16 u32 u64 f32
+syn keyword   rustType        int isize uint usize float char bool u8 u16 u32 u64 f32
 syn keyword   rustType        f64 i8 i16 i32 i64 str Self
 
 " Things from the prelude (src/libstd/prelude.rs) {{{2