[ELF] - Consistent spelling for error/warning messages

Previously error and warnings were not consistent in lld.
Some of them started from lowercase letter, others from
uppercase. Also there was one or two which had a dot at the end.
This patch changes all messages to start from uppercase letter if
they were not before.

Differential revision: http://reviews.llvm.org/D18045

llvm-svn: 263125
diff --git a/lld/ELF/Driver.cpp b/lld/ELF/Driver.cpp
index 806846e..e027206 100644
--- a/lld/ELF/Driver.cpp
+++ b/lld/ELF/Driver.cpp
@@ -92,7 +92,7 @@
   using namespace llvm::sys::fs;
   log(Path);
   auto MBOrErr = MemoryBuffer::getFile(Path);
-  if (error(MBOrErr, "cannot open " + Path))
+  if (error(MBOrErr, "Cannot open " + Path))
     return;
   std::unique_ptr<MemoryBuffer> &MB = *MBOrErr;
   MemoryBufferRef MBRef = MB->getMemBufferRef();
@@ -313,7 +313,7 @@
   }
 
   if (Files.empty() && !HasError)
-    error("no input files.");
+    error("No input files");
 }
 
 template <class ELFT> void LinkerDriver::link(opt::InputArgList &Args) {