(cherry picked from commit 354efdc8)

(cherry picked from commit 9187e8ad)

(cherry picked from commit 3fd2f7ed)

(cherry picked from commit b326f9c1)

(cherry picked from commit b78c64e0)

Further on nograph: moved printed output when advanced=1 from plot_identification to disp_identification.
(cherry picked from commit 98c809c5)

(cherry picked from commit fd24b936)

(cherry picked from commit 186d973c)

Proper handling of nograph option in gsa routines. Accordingly some more printed output on command window is allowed.
(cherry picked from commit 0494b92e)

(cherry picked from commit abad13d0)

Consider the effective number of structural innovations in initial_estimation_checks routine. Some of the declared structural innovations may have been calibrated with a zero variance.
(cherry picked from commit 17638552)

Removed NaNs in M_.Correlation_matrix if they are the consequence of variances (of structural innovations) calibrated to zero.
(cherry picked from commit b907e82e)

(cherry picked from commit a5d84a90)

(cherry picked from commit 3900d282)

not present in initval or endval are set to zero.
(cherry picked from commit a16cade6)

variables. The preprocessor still needs to be modified to allow
arbitrary initial value of the Lagrange multipliers
(cherry picked from commit 9eb5b283b1da78b6d3f76739b91802268268b564)

(cherry picked from commit 19f6eca2)

(cherry picked from commit bbc6cba4)

(cherry picked from commit 9f161ff3)

cleaned up error messages related to priors; set error trap for
initilial likelihood Nan or complex
(cherry picked from commit 3ff832dd)

(cherry picked from commit 1902cbe95fc9afe379a87e0b5b5c791aa387e9ff)

They trigger warnings under Octave
(cherry picked from commit 661531eb)

(cherry picked from commit cef35cd3)

(cherry picked from commit 83623723)

(cherry picked from commit eb4fcb2c)

(cherry picked from commit 0d913e42358d38e2cb7a8e0921ddb02e41b64f26)

(cherry picked from commit 4a9592a5)