Fixed error starting with uppercase

Error messages cleaned in librustc/middle

Error messages cleaned in libsyntax

Error messages cleaned in libsyntax more agressively

Error messages cleaned in librustc more aggressively

Fixed affected tests

Fixed other failing tests

Last failing tests fixed

src/libsyntax/parse/obsolete.rs

@@ -76,7 +76,7 @@ fn obsolete(&mut self, sp: Span, kind: ObsoleteSyntax) {
         let (kind_str, desc) = match kind {
             ObsoleteSwap => (
                 "swap",
-                "Use std::util::{swap, replace} instead"
+                "use std::util::{swap, replace} instead"
             ),
             ObsoleteUnsafeBlock => (
                 "non-standalone unsafe block",

src/libsyntax/parse/parser.rs

@@ -431,7 +431,7 @@ pub fn check_for_erroneous_unit_struct_expecting(&mut self, expected: &[token::T
             && self.look_ahead(1, |t| *t == token::RBRACE) {
             // matched; signal non-fatal error and recover.
             self.span_err(self.span,
-                          "Unit-like struct construction is written with no trailing `{ }`");
+                          "unit-like struct construction is written with no trailing `{ }`");
             self.eat(&token::LBRACE);
             self.eat(&token::RBRACE);
             true
@@ -1601,7 +1601,7 @@ pub fn parse_lifetime(&mut self) -> ast::Lifetime {
                 };
             }
             _ => {
-                self.fatal(format!("Expected a lifetime name"));
+                self.fatal(format!("expected a lifetime name"));
             }
         }
     }
@@ -2137,7 +2137,7 @@ fn parse_any_tt_tok(p: &mut Parser) -> TokenTree {
                 }
                 // There shouldn't really be a span, but it's easier for the test runner
                 // if we give it one
-                self.fatal("This file contains an un-closed delimiter ");
+                self.fatal("this file contains an un-closed delimiter ");
             }
             token::LPAREN | token::LBRACE | token::LBRACKET => {
                 let close_delim = token::flip_delimiter(&self.token);
@@ -3957,7 +3957,7 @@ fn parse_item_struct(&mut self) -> ItemInfo {
             }
             if fields.len() == 0 {
                 let string = get_ident_interner().get(class_name.name);
-                self.fatal(format!("Unit-like struct definition should be written as `struct {};`",
+                self.fatal(format!("unit-like struct definition should be written as `struct {};`",
                                    string.as_slice()));
             }
             self.bump();