port/firefox-1.0,1 : Proper method of having side-by-side libraries?

[Leroy van Logchem]

Hi all,

Few days ago I port installed firefox-1.0,1 which didnt start because it 
wanted to have .399 pango libaries while I have .600's.
Just symlinking does work but what's the most proper method of handling 
binaries which require other versions?

lrwxr-xr-x   1 root  wheel       22 Nov 11 10:56 libpangoxft-1.0.399 -> 
libpangoxft-1.0.so.600
lrwxr-xr-x   1 root  wheel       22 Nov 11 10:57 libpangoxft-1.0.so.399 
-> libpangoxft-1.0.so.600
lrwxr-xr-x   1 root  wheel       20 Nov 11 10:58 libpangox-1.0.so.399 -> 
libpangox-1.0.so.600
lrwxr-xr-x   1 root  wheel       19 Nov 11 10:59 libpango-1.0.so.399 -> 
libpango-1.0.so.600

(Running 4.10-RELEASE-p3 running xfce-3.8)

Thanks,
Leroy