Fix of library destination dir
Catch exceptions from constructor of application

Now user must not put cocaine::framework::run in try-catch block. Framework catches all exceptions, prints error messages and and sends abnormal terminate to runtime if it's possible.
Add spec-file
Several fixes in services

* Service client can detect that locator doesn't know about requested service.
* Fixed dereferencing of invalid pointer.
* Service manager deletes resolver before other services, because resolver can produce events for other services in destructor.
IPv6 support in services!

Services use new resolver from cocaine::io that supports IPv6.
Also it's possible to put hostname of resolver to service manager, not only IPv4 address.
Remove default executor from service manager

Default executor was removed from API several commits ago. Now i've removed it from code entirely.
service_t isn't friend of service_connection_t

Encapsulation is great good!
Release 0.10.6.0.
Merge branch 'master', remote branch 'origin' into v0.10