Merge branch 'ul-refactor' of https://github.com/kerolasa/util-linux

Merge branch 'ul-refactor' of https://github.com/kerolasa/util-linux

* 'ul-refactor' of https://github.com/kerolasa/util-linux:
  ul: flip comparisons to lesser to greater order
  ul: use size_t to measure memory allocation size
  ul: improve function and variable names
  ul: rename enumerated mode symbols
  ul: remove function like putwp preprocessor define
  ul: free most allocations ncurses did during setupterm()
  ul: replace global runtime variables with a control structure
  ul: add a term capabilities tracking structure
  ul: remove function prototypes
  ul: tidy up coding style
  ul: add basic tests