DB access and marketplace control from master and slave zones:
* Client class is singleton as required by xmlrpc-c
* one_auth initialization moved to a comon location
* MarketPlaceApp and MarketPlace actions are performed in the same zone as
the associated marketplace.
* Adds three new api calls updateDB, dropDB and allocateDB to perform
low level DB operations. These methods are exposed for Market y
MarketApps
* Forward operations are abstarct by Pool classes
* Apps and markets now includes a ZONE_ID
Javi Fontan