Bug#797184: eom should depend on librsvg2-common, not recommend it

[Vlad Orlov]

Hi,

In all releases eom should depend on librsvg2-common; in Jessie there's just no 
need
to specify a version as 1.8 didn't require librsvg2-common >= 2.36.2 yet. But 
in 1.10
librsvg2-common >= 2.36.2 is required.