This change speeds up ADTHE_MAIN_LOOP in
verification/global_oce_bio_bling by a factor of 7 (!), mainly because
it fixes the extensive recomputations. Relative to the version prior
to this PR the speed up is small.

With this commit (on my laptop):
User/System/Wall clock time:   51.93 sec / 0.30 sec /  52.59 sec
Before:
User/System/Wall clock time:  358.49 sec / 0.35 sec / 360.67 sec

- remove bling_write_pickup.f from bling_ad_diff.list because the call
is not visible to taf anyway
- remove bling_read_pickup.f from bling_ad_diff.list because there are
flow directives (avoid another warning)

… bling_cleanup

- rename the 2 new params to "chlsat_locTimWindow(2)" (in decimal hour)
- use "decimal hour" consistently (this fix inaccurate time-window criteria).
- allow to be used without pkg/cal

just to avoid un-used variables