[Reduction] #70-78: C start up code

Finally!

[Binary change] Order of the first three relocations in every executable.
Two more relocations in the TH01 executables.
[Reduction] #79: atexit

Once again, random misreferences in one executable slow down the development.
And that function doesn't even seem to be called anywhere.
[Reduction] #80: chmod

Yup, getting rid of all the definitions for "func", so that we can restore the
master.lib macro with the same name.
[Reduction] #81: ioctl