Changeset 4132

DEV: tested for a single pixel with all PFTs for 50 years (imposecn=y and imposecn=n). Added three different set-ups to check for mass balance closure(mbc). The lightest set-up only checks for mbc in stomate.f90 and writes the closure error to the history file. The medium set-up writes details of the mbc to the out_orchidee file, the history file but let's the model run. The most strict set-up stops the model as soon as a mbc problems is found.