add pgstrom_shmem_active_info()
fix up pgstrom_shmem_zone_block_free according to shmem_body structure
improve restrack mechanism
bitmapcopy revised
just compilable
cache build looks to me working
a workaround commit
add clserv_log(fmt,..) for thread-safe logging
revised thread-safe version message logging
bugfix: all the records on tcache_column_store were handled as NULL
values and nullmap are sent in single DMA transfer.