PPC64 GOT alignment trouble

[Andrew Stubbs]

Since this commit, in April, our PPC64 kernel refuses to boot.

a27e685f  Align .TOC. for PowerPC64

I think I can see that the optimal solution to my problem, performance 
wise, is to adjust my linker script to properly align the section. Am I 
right, or was this supposed to happen magically?

However, given how hard it was to figure out, it seems unreasonable to 
break every custom linker script in existence without even a warning!

Is this breakage unintentional? Was it supposed to continue to work when 
not 256-byte aligned?

It needs to either Just Work, or fail with a useful diagnostic, but I 
don't know which?

Andrew