Additional IPHEN_SCHEME option

[mpaiao]

New option for IPHEN_SCHEME.

Description

The new IPHEN_SCHEME and associated code changes allows setting PFTs to use light phenology and hydro-deciduous phenology at the same time.

Collaborators

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.

Testing :

• All new and existing tests passed.