Konstantin Belousov 1a9879c32a Despite official i386 ABI does not mandate any stack alignment besides
the word alignment, some versions of gcc do require 16-byte alignment.
Make sure the stack is 16-byte aligned before calling a subroutine.

Inspired by:	PR amd64/162214
MFC after:	1 week
2011-11-02 18:08:30 +00:00
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