Tried to minimize actual code modifcations but we got
- several comments/printf messages edited to meet line limits
- occasionally switch some lines to put declarations or printfs in blocks
- couple more places marked TODO or FIXME to avoid non-trivial changes
- fixed PAGE_SIZE define in helpers.h to avoid redeclaration warning
- remove several chunks of dead or commented code
Co-authored-by: Steffen Schulz <steffen.schulz@intel.com>
Both, the legacy 'redqueen' trace via libxdc callback as well as new
dump_pt trace option are now toggled with aux-buffer trace_mode option.
This new qemu cmdline option allows to re-enable the old trace method,
or even use both trace methods at the same time.
