Update declarations for all functions/methods that accept printf-style
stdarg formats to use __attribute__ format so the compiler can flag
incorrect uses.  Fix all incorrect uses.  Most of these are innocuous,
a few were resulting in crashes.

llvm-svn: 140185
diff --git a/lldb/source/Symbol/Variable.cpp b/lldb/source/Symbol/Variable.cpp
index e752485..d5bba28 100644
--- a/lldb/source/Symbol/Variable.cpp
+++ b/lldb/source/Symbol/Variable.cpp
@@ -84,7 +84,7 @@
 void
 Variable::Dump(Stream *s, bool show_context) const
 {
-    s->Printf("%.*p: ", (int)sizeof(void*) * 2, this);
+    s->Printf("%p: ", this);
     s->Indent();
     *s << "Variable" << (const UserID&)*this;