Hard-code ANSI escape sequences for common terminals
Hard-code ANSI escape sequences for common terminals

Since almost every modern terminal pretends to be an xterm, and tmux
pretends to be a screen, this should save us nine spawned processes
(five tput, five subshells, minus one for the printf subshell) per
ceylon invocation on the vast majority of terminals.

gijsleussink/ceylon,gijsleussink/ceylon,gijsleussink/ceylon,gijsleussink/ceylon,gijsleussink/ceylon