Обсуждение: pgsql: Get the MIPS assembler syntax right.

Log Message:
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Get the MIPS assembler syntax right.  Also add a separate sync command;
the reference I consulted yesterday said SC does a SYNC, but apparently
this is not true on newer MIPS processors, so be safe.

Modified Files:
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    pgsql/src/include/storage:
        s_lock.h (r1.137 -> r1.138)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/storage/s_lock.h.diff?r1=1.137&r2=1.138)