[gentoo-user] install a single package into a different tree?

[Helmut Jarausch]

Hi,

 I'd like to install both media-video/avidemux-2.5.6-r2 and  
media-video/avidemux-2.6.2
 which are blocking each other.
 Is it possible to install one of them in a different "tree" like  
/usr/local
 instead of /usr

 Many thanks for a hint,
 Helmut.