On Linux if a detour crossed a page boundary we would only change the
memory protection of the first page (as we were aligning the address as
required, but not taking into account the length).
I don't have an easy way to test this but it looks correct. `addr + len`
doesn't appear to need to be aligned though, so another option could be
to use `(addr - startPage) + length` as len.
Also fixed a non-zero offset being passed into CDetour's ApplyPatch
function - this is never done internally anywhere, but it doesn't hurt
to fix it.
Fixes#984
Asher Baker
5b7c9c5845