move _BSD_SOURCE to makefile
rename base to mmap_base
rename field -> field_desc
reformat comment
create helpers.c
add rwmem_opts
reformat functions
remove -pedantic from makefile
move readmem & writemem
move some variable declarations
move code to cmdline.c
add parse_value
rename rwmem_opt fields
add datafiles
add strip & split_str helpers
fields
update usage
fix parsing base and regfile
fix parsing with no regfile
clean up printing