the expected size of the magic(5) database agree with the
real world. Also, improve the behavior of the realloc
mechanism when the magic database does exceed expectations.
Reviewed by: Peter Jeremy, Matt Dillon
Obtained from: Peter Edwards <peter.edwards@isocor.ie>
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.