Change extensions layout

[klando]

the current inclusion of pg_find_plans into pg_stat_plans is not helpful for packaging.

What about the following layout ?
├── debian
├── Makefile
├── pg_find_plans
│   └── Makefile
└── pg_stat_plans
└── Makefile

The top Makefile allows to builld with options like that :
make PG_STAT_PLANS=1 PG_FIND_PLANS=1 # (the default)
and each sub-Makefile works as usual.

Even if we don't want to keep the debian/ (and a rpm/ ?) I do prefer this layout.

OK ?

[petergeoghegan]

@klando Makes sense to me - it would be nice to build/install everything in one go. I think, just for the record, that it was the correct decision to make pg_find_plans a separate module that resides in the same source control repository.

The convention I favour for pg_find_plans is that its version and dependency on pg_stat_plans should match pg_stat_plans (So right now they're all 1.0, which is good). We should stick to this.

There is only going to be an rpm/ if someone steps forward and makes the effort to work on that. It's unlikely to be me.

[terrorobe]

I'll probably have a look at rpm packaging in the near future

[Hubbitus]

@terrorobe, do you packaging it into rpm already?

[lfittl]

@Hubbitus We ended up not using pg_stat_plans due to #39

[Hubbitus]

@terrorobe thanks.