[Tilesathome] minsize support in or/p

[Jiri Klement]

> While experimenting I had a small problem with the symbols directory. I
> had or/p and osmarender6 checked out from underneath
> applications/rendering (i.e. not inside t at h), and ran or/p with
>
> perl orp.pl -r ../osmarender6/osm-map-features-z12.xml myfile.osm
>
> then received the error message that "../osmarender/symbols/peak.svg"
> was not found (note osmarender without "6"). It seems as if someone,
> somewhere makes an assumption that only works inside t at h (where
> osmarender is named without the "6"). May well be my own mistake, but I
> don't have time to investigate right now as my flight is about to depart
> and I'll be offline until Sunday.

It was me who hardcoded path to osmarender in orp. The path to symbols
should be relative to location of stylesheet, but t at h client modifies
stylesheets and move it to working directory. I will have to either
make client move symbols dir as well (which would require client to
parse stylesheet) or change client to use unmodified stylesheets.