Solaris 10 Sparc 64bit.


include/my_atomic.h:
  Prototypes in the non-inline (extern) case were wrong: they were
  missing "U_a" i.e. "volatile *". Caused a segfault in my_atomic-t
  on Solaris10 Sparc 64.
storage/maria/ma_loghandler.c:
  Move "buffer" array up in the struct, to get it aligned on long-boundary
  so that page cache can use bmove512() (it was not aligned and bmove512()
  was used, causing SIGBUS on Solaris10 Sparc 64).
storage/maria/unittest/ma_pagecache_consist.c:
  doing *(uint*)(charbuff)=something is not ok on sparc machines, we must
  use int4store/uint4korr. Fixes a SIGBUS on Solaris10 Sparc 64.