Less version 408

Version 408 was released on 1 Oct 2007.

These are the differences between version 406 and version 408:

• Support CSI escape sequences, like SGR escape sequences.
• Fix bug which caused screen to fail to repaint when window is resized.
• Fix bug in using -i and -I flags with non-ASCII text.
• Fix configure bug on systems which don't support langinfo.h.