Prepare release
Add system information aggregate
Add system_information testsuite
Add beam dynamic libraries to system_information
Fix system_information get_beam_name/0

os:getenv("EMU") is not set for windows, use "beam" instead.
Check for native code without loading module
Allow 'silent' flag to be set with dbg:p/2

This flag, which silences call trace, can be set with erlang:trace/3,
but was not allowed in dbg:p/2. This has been corrected.