[patch] ARM Shark compilation and logic fix after last months Shark refactoring.

[Xerxes Rånby]

Shark have evolved rapidly during the past months and went through
several refactoring and cleaning up phases.
Shark contains a workaround for the lack of atomic operations in LLVM
for ARM, the workaround have unfortunately broke during the refactoring
runs.
This patch fixes the workaround and makes it functional again for ARM.

Ok to commit to Icedtea6 trunk ?

Ok to commit to Icedtea6 1.6 release branch?

The changelog would be:
2009-08-21  Xerxes Rånby  <xerxes at zafena.se>

        *ports/hotspot/src/share/vm/shark/sharkBuilder.cpp
        (zero_cmpxchg_int): Updated method to match current Shark
        and LLVM atomic calling convention.
        Fixes compilation error and logic for ARM.
        (zero_cmpxchg_ptr): Likewise.


Cheers
Xerxes
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