* hdf5: mark +fortran+shared conflict for older version
This version was only activated unintentionally by silo's conflict
statement, but `@1.8.15+shared+fortran+cxx` errors out in configure:
```
CMake Error at CMakeLists.txt:814 (message):
**** Shared FORTRAN libraries are unsupported ****
```
* silo: refine hdf5 conflicts to avoid building old version
Before this, `silo+hdf5` concretized to 1.10.7 or sometimes 1.8.15. Now
I've verified it works for the following configurations:
```
silo@4.10.2 patches=7b5a1dc,952d3c9
^ hdf5@1.10.7 api=default
silo@4.10.2 patches=7b5a1dc,952d3c9,eb2a3a0
^ hdf5@1.10.8 api=v18
silo@4.10.2 patches=7b5a1dc,952d3c9,eb2a3a0
^ hdf5@1.12.1 api=v110
silo@4.11-bsd patches=eb2a3a0
^ hdf5@1.12.1 api=v110
silo@4.11-bsd patches=eb2a3a0
^ hdf5@1.10.8 api=default
silo@4.11-bsd patches=eb2a3a0
^ hdf5@1.12.1 api=default
```
and verified that the following fail:
```
silo@4.10.2 ^hdf5@1.12.1 api=default
silo@4.11 ^hdf5 api=v18
silo@4.11-bsd ^hdf5@1.13.0 api=v12
silo@4.11-bsd ^hdf5@1.13.0 api=default
```
and have updated the constraints to match. Hdf5 no longer has to be
downgraded to work with Silo.
* silo: fix dependency conflicts
* py-h5py: shorten and add comments to py-h5py hdf5 dependencies
* e4s: remove slightly outdated hdf5 requirement
* e4s: remove excessive hdf5 variant constraints
These I think are holdovers from the old concretizer.
- `hdf5_compat` can be expressed as `+hdf5 ^hdf5@1.8`
- The extra variants on hdf5 shouldn't break conduit
- axom unnecessarily restricts hdf5 version
* conduit: restore hdf5_compat flag
5bea24526f