vmware: Fix initialization of VMware Fusion

vmware: Fix initialization of VMware Fusion

The vmware driver wants to execute vmware-vmx from the same directory in
which vmrun was found. However, on VMware Fusion 10 vmrun at
/Applications/VMware Fusion.app/Contents/Public/vmrun is a symlink
pointing to ../Library/vmrun. vmware-vmx cannot be found, as
it is not in PATH, but only in this Library directory.

Therefore, follow the vmrun symlink and use the resulting path. Then the
assumption that vmware-vmx is right next to it will still work.

Signed-off-by: Rainer Müller <raimue@codingfarm.de>