Update to shocc folder

New folder.

Stubs and dummy routines

Add   : src/shocc
   - Added dummy routines for sub-hourly occupancy
     simulation module. Denis Bourgeois plans to GPL and
     contribute his shocc code to the ESP-r general
     distribution in the near future.

Change: src/esrubld/bmatsv.F
Change: src/esrubld/casual.F
Change: src/esrubld/solar.F
Change: src/esrucom/econstr.F
Change: src/esrucom/esru_misc.F
Change: src/esrubps/bmatsv.F
    - Added stub calls and dummy assignments for
     SHOCC routines
