Problem: can't trace client constructor
Problem: can't trace client constructor

The use of a method to enable verbose tracing is poor, as it cannot
trace construction (where problems do happen frequently).

Solution: remove $(client.name)_verbose method and replace with a
global variable, one per class, that can be set true/false before
creating any instances.

Note: this breaks existing client code. Calls to _verbose() have to
be changed to setting this variable true/false at the start.

asokoloski/zproto,bkmit/zproto,jemc/zproto,sappo/zproto,zeromq/zproto,somdoron/zproto,zeromq/zproto,vyskocilm/zproto,jemc/zproto,sappo/zproto,zeromq/zproto,zeromq/zproto,bkmit/zproto,vyskocilm/zproto,somdoron/zproto,c-rack/zproto,c-rack/zproto,sphaero/zproto,asokoloski/zproto,zeromq/zproto,jemc/zproto,bkmit/zproto,bkmit/zproto,jdiez17/zproto,vyskocilm/zproto,bkmit/zproto,bkmit/zproto,jdiez17/zproto,vyskocilm/zproto,jdiez17/zproto,jdiez17/zproto,zeromq/zproto,asokoloski/zproto,hintjens/zproto,sappo/zproto,somdoron/zproto,jdiez17/zproto,vyskocilm/zproto,c-rack/zproto,vyskocilm/zproto,asokoloski/zproto,c-rack/zproto,vyskocilm/zproto,somdoron/zproto,jdiez17/zproto,sphaero/zproto,c-rack/zproto,asokoloski/zproto,hintjens/zproto,bkmit/zproto,hintjens/zproto,hintjens/zproto,sphaero/zproto,sphaero/zproto,c-rack/zproto,sappo/zproto,asokoloski/zproto,jdiez17/zproto,sphaero/zproto,somdoron/zproto,asokoloski/zproto,sappo/zproto,zeromq/zproto,jemc/zproto,somdoron/zproto,sappo/zproto,sappo/zproto,somdoron/zproto,jemc/zproto,jemc/zproto,hintjens/zproto,hintjens/zproto,sphaero/zproto,jemc/zproto,c-rack/zproto,hintjens/zproto