Replace deprecated bison commands

[JCGoran]

TODO:

• according to the docs, updating name-prefix to api.prefix is a bit non-trivial, and a naive fix results in compilation errors. For reference, here's the relevant section:

  The '%name-prefix "xx"' directive is deprecated in favor of '%define
  api.prefix {xx}' since Bison 3.0, but no warning was issued.  These
  directives are slightly different, you might need to adjust your code.
  %name-prefix renames only symbols with external linkage, while api.prefix
  also renames types and macros, including YYDEBUG, YYTOKENTYPE,
  yytokentype, YYSTYPE, YYLTYPE, etc.
  
  Users of Flex that move from '%name-prefix "xx"' to '%define api.prefix
  {xx}' will typically have to update YY_DECL from
  
  #define YY_DECL int xxlex (YYSTYPE *yylval, YYLTYPE *yylloc)
  
  to
  
  #define YY_DECL int xxlex (XXSTYPE *yylval, XXLTYPE *yylloc)
  

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.30%. Comparing base (7c4a829) to head (2eb369a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1221   +/-   ##
=======================================
  Coverage   86.30%   86.30%           
=======================================
  Files         178      178           
  Lines       13263    13263           
=======================================
  Hits        11446    11446           
  Misses       1817     1817           

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[alkino]

I never changed this one because Ubuntu still have old bison, IIRC

[JCGoran]

According to https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2004-Readme.md the Ubuntu runner should have Bison 3.5.1, so we should be good as far as versions are concerned.

[bbpbuildbot]

Logfiles from GitLab pipeline #212633 (:white_check_mark:) have been uploaded here!

Status and direct links:

• ✅ spack_setup
• ✅ build:intel
• ✅ build:nvhpc
• ✅ test:intel
• ✅ test:nvhpc

[pramodk]

I never changed this one because Ubuntu still have old bison, IIRC

@alkino : I remember an old discussion where I was included to support previous versions. Looking at your comment here: #717 (comment), I guess now it's reasonable to support Ubuntu >= 20. With NEURON, users get NMODL via pip install anyway.