Make command line option to show all debugging consistent with similar options

Most people expect a value of 1 to enable all for command line arguments.
However to do this for the -debug option you must type "-debug=".
This has been changed to allow "-debug=1" as well as "-debug=" to
enable all debug logging

src/util.cpp

@@ -217,6 +217,7 @@ bool LogAcceptCategory(const char* category)
 
         // if not debugging everything and not debugging specific category, LogPrint does nothing.
         if (setCategories.count(string("")) == 0 &&
+            setCategories.count(string("1")) == 0 &&
             setCategories.count(string(category)) == 0)
             return false;
     }