* Fix some memory leaks
* Mark r_buf_data as deprecated
* Remove some spaguetti (-42LOC)
* Fix buf license header authorship
* Make parser functions return void for simplicity
* Reimplement r_buf_fread/fwrite
* Add slice buffer and introduce readonly field
* Do nothing if size is 0
* Prevents an overflow when 8 is subtracted from size.
* Fix ragg2 when patching outside currently existing buffer
* Implement r_mem_mmap_resize for systems where mremap is not defined
* r_buf_buffer can be called with no size arg as well
* Use size_t instead of ut64