Correcte couple typos

[arango]

• Corrected couple of cut/paste typos in ROMS/Functionals/ana_cloud.h and ROMS/Utility/read_asspar.F.

• Updated routine datevec in dateclock.F to make sure that seconds are positive:

  !
  !  Convert fraction of a day.
  !
        seconds=DayFraction*86400.0_r8
        CT=3.0_r8*EPSILON(seconds)             ! comparison tolerance
        seconds=ROUND(seconds, CT)             ! tolerant round function
  !
        hour=INT(seconds/3600.0_r8)
        seconds=ABS(seconds-REAL(hour*3600,r8))
        minutes=INT(seconds/60.0_r8)
        seconds=ABS(seconds-REAL(minutes*60,r8))