Add a greedy join search algorithm to handle large join problems

Applying: Add GOO (Greedy Operator Ordering) join search as an alternative to GEQO
Using index info to reconstruct a base tree...
M	src/backend/optimizer/path/allpaths.c
M	src/backend/utils/misc/guc_parameters.dat
M	src/backend/utils/misc/postgresql.conf.sample
M	src/include/optimizer/paths.h
M	src/test/regress/expected/sysviews.out
M	src/test/regress/parallel_schedule
Falling back to patching base and 3-way merge...
Auto-merging src/test/regress/parallel_schedule
CONFLICT (content): Merge conflict in src/test/regress/parallel_schedule
Auto-merging src/test/regress/expected/sysviews.out
Auto-merging src/include/optimizer/paths.h
Auto-merging src/backend/utils/misc/postgresql.conf.sample
Auto-merging src/backend/utils/misc/guc_parameters.dat
Auto-merging src/backend/optimizer/path/allpaths.c
Patch failed at 0001 Add GOO (Greedy Operator Ordering) join search as an alternative to GEQO

error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"