std: Rename {Eq,Ord} to Partial{Eq,Ord}

This is part of the ongoing renaming of the equality traits. See #12517 for more
details. All code using Eq/Ord will temporarily need to move to Partial{Eq,Ord}
or the Total{Eq,Ord} traits. The Total traits will soon be renamed to {Eq,Ord}.

cc #12517

[breaking-change]

src/libsyntax/attr.rs

@@ -307,7 +307,7 @@ pub fn find_crateid(attrs: &[Attribute]) -> Option<CrateId> {
     }
 }
 
-#[deriving(Eq)]
+#[deriving(PartialEq)]
 pub enum InlineAttr {
     InlineNone,
     InlineHint,
@@ -396,7 +396,7 @@ pub struct Stability {
 }
 
 /// The available stability levels.
-#[deriving(Eq,Ord,Clone,Show)]
+#[deriving(PartialEq,PartialOrd,Clone,Show)]
 pub enum StabilityLevel {
     Deprecated,
     Experimental,
@@ -522,7 +522,7 @@ fn int_type_of_word(s: &str) -> Option<IntType> {
     }
 }
 
-#[deriving(Eq, Show)]
+#[deriving(PartialEq, Show)]
 pub enum ReprAttr {
     ReprAny,
     ReprInt(Span, IntType),
@@ -539,7 +539,7 @@ impl ReprAttr {
     }
 }
 
-#[deriving(Eq, Show)]
+#[deriving(PartialEq, Show)]
 pub enum IntType {
     SignedInt(ast::IntTy),
     UnsignedInt(ast::UintTy)