Log Message:
Update to OpenPA 1.0.4

Inter-process locking may be broken on NetBSD under some conditions.
(This didn't get worse since previous package.)
Field tests (benchmarks/skampi) don't reveal that the relevant
code path is invoked.

Major Changes in OpenPA v1.0.4
 * native ARM (v7 and higher) support
 * numerous memory barrier placement improvements in queue and test code
 * x86 memory barrier improvements, including for Intel MIC
 * numerous build system improvements

Major Changes in OpenPA v1.0.3

 * Libtool shared library support for OPA, avoiding shared/static mixed
   linking problems on some platforms.
 * The build system should now work more portably with broken/exotic shells.
 * pkg-config support
 * Emulated atomics can now be detected by the presence of an OPA_EXPLICIT_EMULATION
   #define in opa_config.h.
 * PPC types are now correctly aligned to 8 bytes instead of 16 bytes.
 * many more tests for "make check", fixed missing memory barriers in \ 
one test