Convert all occurences of sal_Bool, sal_True and sal_False in basctl
to bool, true and false -- except in prototypes of virtual function
overrides. (The virtual functions that are internal to basctl can be
and was converted.) Note that since sal_Bool and bool are implicitly
convertible to each other, for functions that take a sal_Bool (by
value), true and false can be given too.

Change-Id: Ie44740fa87f89e9fedd913840ca2b38e95e6b957