resolve a fixme: the "nonexecutable stack directive" is actually
a .section.  Switch to it with SwitchSection.

However, I think that this directive should be safe on any ELF target.
If so, we should hoist it up out of the X86 and SystemZ targets.

llvm-svn: 94298
diff --git a/llvm/lib/MC/MCAsmInfo.cpp b/llvm/lib/MC/MCAsmInfo.cpp
index debccaf..b96b4e9 100644
--- a/llvm/lib/MC/MCAsmInfo.cpp
+++ b/llvm/lib/MC/MCAsmInfo.cpp
@@ -19,9 +19,9 @@
 using namespace llvm;
 
 MCAsmInfo::MCAsmInfo() {
+  HasSubsectionsViaSymbols = false;
   HasMachoZeroFillDirective = false;
   HasStaticCtorDtorReferenceInStaticMode = false;
-  NonexecutableStackDirective = 0;
   NeedsSet = false;
   MaxInstLength = 4;
   PCSymbol = "$";