compilation breaks after bison 3.7.x upgrade

[priv-kweihmann]

After updating to bison 3.7.1 compilation doesn't work anymore - compiler is complains about syntax errors.
Same files work with versions < 3.7.0

find -name "*.y" -exec bison --update {} \; does return

./src/mtgrammar.y: warning: 11 shift/reduce conflicts [-Wconflicts-sr]
./src/mtgrammar.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
./src/cgrammar.y: warning: 159 shift/reduce conflicts [-Wconflicts-sr]
./src/cgrammar.y: warning: 123 reduce/reduce conflicts [-Wconflicts-rr]
./src/cgrammar.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
./src/llgrammar.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
./src/llgrammar.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples

Used versions

• bison 3.7.1
• gcc 10.2.0
• splint a28a60f

[millert]

Bison 3.7 now includes the generated header file so the .c files need to be modified to include the correct file after things get renamed. This is fixed by #26