ms-sbvar: submodule update, undo bug introduced in 21b75f9b9a71baa9bf2b953f583e4d3154bf442e
ms-sbvar: submodule update, closes #446

(cherry picked from commit a26d32b7fa20464c50c9ea681db5e987505102d6)
ms-sbvar: submodule update, fix ms-sbvar for Octave on MinGW

(cherry picked from commit f6f167ada77357541b3ac7f2ba4b56c39144791c)
fix typo
(cherry picked from commit e765c16b736829665ed3c4c41c7ee3904bef22ce)
fix typo fix
(cherry picked from commit ef777de3d55270bb6c3257232da5c60ebe6758a7)
Merge pull request #558 from rattoma/4.4

Fixes to mode_compute=5. (1) force univariate steps at every iteration: ...
Forbid the combination of estimation/mode_file and estimated_params_init/use_calibration

Closes #549
(cherry picked from commit 49a51ed80844358d35e099b5eb102baef05b6846)
allow long_name to be used without specifying a latex name, #478

(cherry picked from commit 54b3a18ceda3091593dbcb84184050ef32dc3782)
write_latex_definitions: use longtable, #478

(cherry picked from commit 3539dc71535c0fee6259f2f9900f002f2d2817aa)
write_latex_definitions: use texttt for variable names, #478

(cherry picked from commit 10652be09a874d39fa551b65f7745f7e522dd72d)
write_latex_definitions: remove lines that prevented this code from being included in a larger latex doc
(cherry picked from commit 2d966208c4b128a64be9503f4c275f5410964473)
Modify get_directory_description to return a flat cell
(cherry picked from commit b840af9fa584a5468e5208bf41d0db8ec737aa74)
Add unitary tests to testsuite
(cherry picked from commit 5f3d56c31aed18a7b6f22625b373233946561fd5)
Update tests/.gitignore
(cherry picked from commit c7cb38e687f968da0361eb10164b894417bf67af)
Add missing file to tarball
(cherry picked from commit f525de04b1f7edd4b68a577dc57d8ebdd8994145)
Bug fix with irf restriction on period larger than 1
(cherry picked from commit 2d6e51373813feba80c3aefc380b200893fd605c)