bugfix around covariance function
Merge branch 'preagg' of github.com:kaigai/pg_strom into preagg
Merge branch 'preagg'
add support of multi-exec on gpupreagg
bugfix on gpuscan
bugfix: memory leak on gpupreagg.c
fix uninitialized values
Merge branch 'master' into blkload
a workaround commit
some files are moved to deadcode/
a workaround commit