Support compilation on ARM and pointing at active module (instead of a dll)

[jinxidoru]

This PR contains two separate items.

• I ran into a small problem when trying to install fastcall on an ARM system due to the fact that clang chokes on the "-march" command-line setting and prefers "-mcpu".
• I needed to bind to standard system libraries (i.e. socket, bind, etc) which required calling "dlopen()" on the active module rather than some other explicit library.

[unbornchikken]

Thanks.