* change intent of several dummy arguments
* transform several arrays into allocatable
* remove unused dummy arguments

Remarks: compilation OK, execution not yet functional

+ add P_TH_HINC dummy argument + change intent of *_HIND and *_HINC dummy arguments (INOUT->OUT)

(cherry picked from commit 89e51012)

(cherry picked from commit deffbc2e)

Philippe 28/01/2020: budgets: new subroutines: Budget_store_init, Budget_store_end and Budget_source_id_find in new module mode_budget

Philippe 28/01/2020: budgets: new subroutines: Store_one_budget_rho_new and Store_one_budget_new (not yet used)

Philippe 28/01/2020: budgets: new subroutines: Budget_source_add and Ini_budget_groups (not yet used)

Philippe 27/01/2020: create the tfield_metadata_base abstract datatype and use it as a basis for several datatypes

(cherry picked from commit ad10ea2e)

(cherry picked from commit 0bd1d21d)

(cherry picked from commit 8a27344b)

(cherry picked from commit eb588b37d22491a9f83695ddb158275fc2edc052)