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used to contain the proofs of src/util/{vector,pqueue}.ml
this is now part of the VOCaL library
see https://github.com/vocal-project/vocal/

We prefer to keep specific recent lemmas rather than generic
early axioms.

It is replayed in bisect_end.

These declarations have no logical content.

Unix sockets have the restriction that the path to the socket must be
quite short (100 chars give or take depending on exact OS). We can
workaround this limitation by chdir'ing to the dirname of the socket
first. This was already done in the server, but not in the client.

Change-Id: I798654c277ee2d623607179a41faa7cf0d8f2837

* annotate with proper types

* fix obviously wrong comment

Since the plugins directory contains cmo, cmi, cmt, and cmxs files, Why3
was trying to load each plugin four times in a row, leading to message
floods such as

    lib/plugins/python can't be loaded: Format python is already registered
    lib/plugins/microc can't be loaded: Format micro-C is already registered
    lib/plugins/tptp can't be loaded: Format tptp is already registered
    lib/plugins/python can't be loaded: Format python is already registered
    lib/plugins/microc can't be loaded: Format micro-C is already registered
    lib/plugins/tptp can't be loaded: Format tptp is already registered
    lib/plugins/microc can't be loaded: Format micro-C is already registered
    lib/plugins/python can't be loaded: Format python is already registered
    lib/plugins/tptp can't be loaded: Format tptp is already registered

this makes 'remove' more robust wrt to 'use' in drivers

list arguments are mostly used for remove transformations
this makes them more robust wrt suppression in the standard library