Changes

Moving use statement for one_half inside ifdef, since it is only needed if compilation with MKL functions is enabled.

Adding new code to create lumped budgets to make comparisons easier between SAM and CLUBB.  See #895.

Updates to sam-style-budgets option.

Additional updates to make CLUBB budgets look like SAM budgets.

Pyplotgen changes:

Some additional edits relevant to the --sam-style-budgets option.

See #895.

Update VariableGroupBaseBudgetsSamStyle.py

Updating comments.

Update VariableGroupBaseBudgetsSamStyle.py

Switching DISSIP (now = dp2) and DIFFTR (now = dp1) to look more like the SAM budgets.

Updates to address pull request comments.

See #895 for more info.

Update VariableGroupBaseBudgetsSamStyle.py

Adding some additional comments.