Move obsolete file to directory obsolete
[timed] Remove dependency to qmlog, add logging macros

Add common logging macro definitions to src/common/log.h
[timed] Simplify includes

Remove unnecessary includes from both header and source files.

Do not use include paths that rely on symbolic links created
outside the Qt build system, use relative paths instead when
possible.

The build setup still requires a symbolic link
src/h/timed/qmacro.h that points to src/lib/qmacro.h because
the libvoland links to libtimed, which provides the header
qmacro.h.
[timed] Initial build setup for Qt5
[timed] Include libiodata-qt5 when building Qt5 version
[timed] Remove contextprovider from Qt5 build

The context provider functionality will be provided by statefs
in Qt5.
[timed] Update tests to work with Qt5
[timed] Add OBS files for Qt4 and Qt5 builds
Use correct parameter type for iodata::storage.set_validator()
Store return value of QObject::connect to a bool

Qt5 returns a QMetaObject::Connection from QObject::connect,
which can be cast into a bool to check whether the connection
was successful.