Drop all uses of alloca() and variable size arrays.
Merge branch 'bleeding-jumbo' into memdbg

* bleeding-jumbo:
  Drop all uses of alloca() and variable size arrays.
Fix bugs in LUKS format. Allocations did not account for padding.
Merge branch 'bleeding-jumbo' into memdbg

* bleeding-jumbo:
  Fix bugs in LUKS format. Allocations did not account for padding.