Entity &yatt:abspath(); == location + file

[hkoba]

When requests arrive, yatt knows which template is requested and where is it. It is saved in $CON in following 4 parts.

• dir - physical path of yatt's document root. (yatt can be configured to have multiple document root)
• location - which dirapp was accessed.
• file - which template was accessed. In some case, it is filled as 'index.yatt' by httpd.
• subpath - subroutes (if exists)