Add error message for output file opeing failure
Remove pointless "static"
Remove defaultValue parameter of GetOption()

Introduce another version of GetOption() that stores the option value in
a user-supplied variable (i.e. passed by reference) and returns nothing.
It is more convenient if you have the variable already set to the option's
default.

The old method is now called GetOptionDefault.
Remove useless GetOption() specifalization for std::string
Little cleanup
Fix inconsistent indentation in .dot files
Fix code width
Make call_graph_format case-insensitive
Rename my_amx_Align() to amx_Align_stub
Add DeleteMapEntry()
Add FunctionToVoidPtr()