ElfReader: Support for Section and Symbol size.

- getSection/getSymbol now returns an ElfSymbol reference.

Searching by address now searches if address is within
symbol address and symbol address + size.
So we can test, if we are *within* a function, object or
section and not only at the start address.

src/core/util/Demangler.hpp

@@ -1,10 +1,10 @@
 #ifndef __DEMANGLER_HPP
-#define  __DEMANGLER_HPP
+#define __DEMANGLER_HPP
 
 #include <string>
 
 namespace fail {
-  
+
   class Demangler {
     public: