Rename IgnoredUndef -> Ignored since it is not an undefined symbol.

Also rename Ignored -> IgnoredWeak and IgnoredStrong -> Ignored,
since strong symbol is a norm.

llvm-svn: 257507
diff --git a/lld/ELF/SymbolTable.cpp b/lld/ELF/SymbolTable.cpp
index a66bb04..65f5dff 100644
--- a/lld/ELF/SymbolTable.cpp
+++ b/lld/ELF/SymbolTable.cpp
@@ -120,14 +120,14 @@
 // file's symbol table. Such symbols are useful for some linker-defined symbols.
 template <class ELFT>
 SymbolBody *SymbolTable<ELFT>::addIgnored(StringRef Name) {
-  return addAbsolute(Name, ElfSym<ELFT>::IgnoreUndef);
+  return addAbsolute(Name, ElfSym<ELFT>::IgnoredWeak);
 }
 
 // The 'strong' variant of the addIgnored. Adds symbol which has a global
 // binding and cannot be substituted.
 template <class ELFT>
 SymbolBody *SymbolTable<ELFT>::addIgnoredStrong(StringRef Name) {
-  return addAbsolute(Name, ElfSym<ELFT>::IgnoreUndefStrong);
+  return addAbsolute(Name, ElfSym<ELFT>::Ignored);
 }
 
 // Rename SYM as __wrap_SYM. The original symbol is preserved as __real_SYM.