Subzero: Add -Wshadow to the build.

src/IceELFSection.h

Index: src/IceELFSection.h
diff --git a/src/IceELFSection.h b/src/IceELFSection.h
index a79a9fbbcc95875906f2156b7a201b6b9d1f7709..b5d179e842c8aa3b73bd3960606950590393b884 100644
--- a/src/IceELFSection.h
+++ b/src/IceELFSection.h
@@ -44,9 +44,9 @@ public:
   // Constructs an ELF section, filling in fields that will be known
   // once the *type* of section is decided.  Other fields may be updated
   // incrementally or only after the program is completely defined.
-  ELFSection(const IceString &Name, Elf64_Word ShType, Elf64_Xword ShFlags,
+  ELFSection(const IceString &MyName, Elf64_Word ShType, Elf64_Xword ShFlags,
              Elf64_Xword ShAddralign, Elf64_Xword ShEntsize)
-      : Name(Name), Header() {
+      : Name(MyName), Header() {
     Header.sh_type = ShType;
     Header.sh_flags = ShFlags;
     Header.sh_addralign = ShAddralign;