Rename 'DarwinStaticLib' to 'DarwinLibName'

The former name doesn't make sense, we are using this parameter for both .a and .dylib libraries.

No functional change.

http://reviews.llvm.org/D6040

llvm-svn: 220939
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index f2baff8..15e3ade 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -291,11 +291,11 @@
 }
 
 void MachO::AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
-                              StringRef DarwinStaticLib, bool AlwaysLink,
+                              StringRef DarwinLibName, bool AlwaysLink,
                               bool IsEmbedded) const {
   SmallString<128> P(getDriver().ResourceDir);
   llvm::sys::path::append(P, "lib", IsEmbedded ? "macho_embedded" : "darwin",
-                          DarwinStaticLib);
+                          DarwinLibName);
 
   // For now, allow missing resource libraries to support developers who may
   // not have compiler-rt checked out or integrated into their build (unless