GXemul Code2

Skip printing subsystem name when indentation is used. Also, when single-stepping, print (almost) everything regardless of verbosity level settings.

Adding a -L command line option for enabling tap networking without using configuration files. Also some debugmsg:ifying.

Updating the TODO.

Adding comments.

More debugmsg rewrites.

Minor updates.

Mention the -T cleanup in the RELEASE notes.

Making -T work better for ARM.

Making -T work better for SuperH CPUs.

Making -T work better for PPC CPUs.