Add support for Pd 0.48 (Ubuntu 17.10)

[meschi]

I tested the official and my own binaries against vanilla-0.47.1-3 and vanilla-0.48 on Ubuntu 17.10.
The binaries are compatible with the old pure data, but when trying the new version thats coming with Ubuntu 17.10 pure data is unable to load the Hoa library.

When pd tries to load the library it displays this error message:

::pdwindow::logpost {} 4 {/home/meschi/Documents/Pd/externals/Cream/Cream.pd_linux: /home/meschi/Documents/Pd/externals/Cream/Cream.pd_linux: undefined symbol: sys_staticpath
}

[...]

::pdwindow::logpost {} 4 {/home/meschi/Documents/Pd/externals/Hoa/Hoa.pd_linux: /home/meschi/Documents/Pd/externals/Hoa/Hoa.pd_linux: undefined symbol: sys_staticpath
}

This library seems to require a internal variable of pure data that was removed in 0.48

[jayrope]

I second the request for a HOA update compatible to pd 0.48-1++.

[mxa]

Let's make this 0.49-0

[muziker]

Hi, i've got a couple of notes on how to fix this for pd-0.50.2, re according to this:
#13

[J-Mus]

Anyone able to helps do this for MacOS?