Lack of user control of Table->quiet in read_table-lib

[willend]

As @g5t has rightfully pointed out, the interface and control of the quiet flag of a Table from read_table-lib is in practice non-existent.

Also, in many use-cases of the that lib, the value can end up being undefined, which has lead to an edit like this one:

McCode/common/lib/share/read_table-lib.c

Lines 287 to 288 in e91475c

	/*TK: Valgrind flags it as usage of uninitialised variable: */
	Table->quiet = 0;

I would therefore suggest we consider trying to encourage / enforce use of Table_init (with a modified footprint including a char quiet) "always", but as multiple other functions in read_table lib also call Table_init, these would need a similar handle...