Merge branch 'write-improvements' of git://github.com/kerolasa/lelux-utiliteetit

* 'write-improvements' of git://github.com/kerolasa/lelux-utiliteetit:
  lib: try to find tty in get_terminal_name()
  write: stop removing and adding /dev/ in front of tty string
  write: tell when effective gid and tty path group mismatch
  write: improve coding style
  write: remove PUTC macro
  write: make timestamp to be obviously just a clock time
  write: remove unnecessary utmp variables
  write: improve function and variable names
  write: add control structure to clarify what is going on
  write: run atexit() checks at the end of execution
  write: use xstrncpy() from strutils.h
  write: set atime value in term_chk() only when needed
  write: remove pointless fileno(3) calls
  write: get rid of function prototypes
  write: remove unused variable