* Added r_list_foreach_prev()
* Add RSyscallPort to handle Hardware I/O ports
* Remove libr/TODO and refactor /TODO
* Link with 'ld' in rarc2-tool for nasm
- ATM lives in r_util, but should be moved to btree.h at some point
Like the kernel's list.h does.
- No node tree path find optimization yet
* Integrate btree with r_flag API
- Accelerates the resolution of flags per offset
- At some point we will need to use paralel tree's to store all the
nodes optimized by different fields (name, offset, ...)
* Added test program for flags and btree algorithm
* Change the print format of flags in the disassembly