TABLE_LIST objects are frequently default-constructed, only
to be initalized again with TABLE_LIST::init_one_table().

This fix removes TABLE_LIST::init_one_table() and replaces
the calls to the default constructor with the constructor
taking the same arguments as init_one_table() took. In very
few cases (i.e. authentication code) where the construction
of the TABLE_LIST objects and the initalizations are far
away, init_one_table() is replaced with assignment.

Change-Id: Iffcd2bc088626d6df02feb6ef87bfa517c6f7407