Log Message:
zutty: update to 0.15.

Add XTQMODKEYS (partial, only for supporting modify
Implement DECSCUSR (w/o blinking): block, bar & underlined
Repository migration
Add NetBSD-specific font search path
Fix regression in last commit
Preserve RGB color across SGR attribute settings
Remove deprecated key from desktop entry file
Fix clearing glyph area before rendering overlay font
Do not paste selection on Shift+KP_Insert
Set COLORTERM=xterm to advertise true color support
Set _NET_WM_[ICON_]NAME to allow Unicode in window