Fixes from MKL team in LAPACKE interfaces

[sergey-v-kuznetsov]

Description

1. Intel MKL had a customer bug about wrong wrong NaN checkers in LAPACKE interfaces and most of changes in this commit are related to the usage of wrong checkers in symmetric eigensolvers and some triangular solvers.
2. Several LAPACKE interfaces like the matrix copy *lacpy, *laset checked info after calling LAPACK kernel which doesn't return info
   LAPACK_dlacpy( &uplo, &m, &n, a, &lda, b, &ldb );
   if( info < 0 ) {
   info = info - 1;
   }
   So the checking info in such cases were removed.
3. There was redundant requirement in LAPACKE_?gesvd_work interfaces. I mean this line
   if( ldvt < n ) {
   info = -12;
   This requirement must hold only if jobvt='a' or jobvt='s'.
4. Other changes are minor.

[weslleyspereira]

Nice job @sergey-v-kuznetsov ! I fixed some minor bugs in the PR sergey-v-kuznetsov#1; could you please review it? I used FFLAGS=-fimplicit-none -frecursive -fcheck=all to find those issues.

[sergey-v-kuznetsov]

Thanks Wessley for your changes. I reviewed them and agree. Sorry I didn't know that const is causing problems with FFLAGS=-fimplicit-none -frecursive -fcheck=all. Thanks again

[codecov]

Codecov Report

Merging #534 (4e693fe) into master (799ef93) will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #534      +/-   ##
==========================================
+ Coverage   82.34%   82.37%   +0.03%     
==========================================
  Files        1876     1894      +18     
  Lines      188160   190681    +2521     
==========================================
+ Hits       154932   157067    +2135     
- Misses      33228    33614     +386     

Impacted Files	Coverage Δ
SRC/iparmq.f	0.00% <0.00%> (ø)
SRC/zhetrd_hb2st.F	97.27% <0.00%> (ø)
SRC/claqz2.f	85.38% <0.00%> (ø)
SRC/zlaqz2.f	85.38% <0.00%> (ø)
SRC/slaqz0.f	79.68% <0.00%> (ø)
SRC/zlaqz0.f	68.32% <0.00%> (ø)
SRC/claqz0.f	66.06% <0.00%> (ø)
SRC/slaqz2.f	100.00% <0.00%> (ø)
SRC/dlaqz1.f	100.00% <0.00%> (ø)
SRC/slaqz3.f	89.23% <0.00%> (ø)
... and 14 more

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[martin-frbg]

I notice (a bit late, I know) that this patch restores several instances of the version date information that had just been removed a few days earlier, namely the "Generated line

[weslleyspereira]

My bad. I reviewed it and forgot to suggest the removal. I fix that in #544