freemount:  Add new constants
freemount-client:  Add send_*_request()
fstat:  Use freemount::send_stat_request()
fdir:  Use freemount::send_list_request()
fls:  Use freemount::send_{stat,list}_request()
fcat:  Use freemount::send_read_request()
Merge branch 'requests'
freemount-client:  Rewrite(v) send_path_request()