recipe for older pplacer 1.1.alpha17 version

[sjanssen2]

The SEPP software uses pplacer as a dependency. Right now, this dependency cannot be served from bioconda, as there is no pplacer version for OSX available. The latest release (1.1.alpha19) does not provide a pre-compiled binary for OSX (only linux), but the older version (1.1.alpha17) does. I therefore try to create a side recipe for this older version to have at least something for OSX

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[sjanssen2]

Unfortunately, I do get the same issue as #24008, let's try to resolve ala https://stackoverflow.com/questions/60106217/dyld-library-not-loaded-usr-local-opt-gsl-lib-libgsl-23-dylib