Merge pull request #5066 from egmontkob/5020-ncurses-color-pairs

Ticket #5020: Reuse ncurses color pairs if possible

Move tty_colorize_area() from tty-*.c to color-*.c

Ncurses shadow drawing cleanup

Fix "shady trick" handling ncurses's overlaid colors

Merge pull request #5054 from peripherium/fix/control-sequence-from-keyboard

tests: add parenthesis to the testing macros to avoid requiring them of the callers

Ticket #4872, #4873, #4874: fix 'insert control code' function

Merge pull request #5064 from egmontkob/5062-menu-click-on-separator

Ticket #5062: Ignore mouse click on a menu's separator line

Merge pull request #5041 from egmontkob/5040-help-left-margin

Ticket #5040: Add a left padding to the Help dialog

Ticket #5040: xnc.hlp: Remove double spaces after full stops

Merge pull request #5057 from KuzinAndrey/update-php-syntax

syntax: update php.syntax for missed reserved words