Fix length of workflow line to 14 instead of 13 after the addition of GAMMA

See merge request !10

bug_fix

See merge request !9

Time window

See merge request !7

Modify output of seismograms depending on the used ADJOINT_TYPE to avoid unnecessary saving of seismograms which are not used. E.g. if ADJOINT_TYPE=2, only the vy seismograms will be stored.

Adjust time-window such that observed and synthetic  data can be expressed as:  d_windowed=d exp(-gamma t).

Fix error for velocity updates in elastic SH-waves

See merge request !5

Import seitosh

libstfinv now supports semicolons as an alternative to commas being used as field separators in parameter values.

See merge request !4

Merge branch 'master' into import_Seitosh

Merge branch 'vendor_Seitosh' into import_Seitosh

Drop current version of Seitosh code. The contents are taken vom branch master
of [Seitosh](https://git.scc.kit.edu/Seitosh/Seitosh). The current master
commit in Seitosh is 0cdd3c0568.

With this vendor drop libstfinv supports semicolons as an alternative to commas being used as field seperators in parameter values.

Commands executed in the root directory of IFOS2D:

    rm -rfv contrib/stfinv
    (cd ~/git/Seitosh/src/libs/libstfinv; tar cvf - $(git ls-files)) \
      | ( cd ~/git/IFOS2D/contrib; mkdir stfinv; cd stfinv; tar xvfps -)
    git add --force contrib/stfinv

Set STF_FULL to 1 in order to ignore the time window and use the total wavefield to invert for the source time function.

Will write filtered and windowed displacement seismograms to disk.