Splits out all semantic passes for Dsymbol, Type, and TemplateParameter
nodes into Visitors in separate files, and the copyright years of all
sources have been updated.
Reviewed-on: https://github.com/dlang/dmd/pull/12190
gcc/d/ChangeLog:
* dmd/MERGE: Merge upstream dmd 7132b3537.
* Make-lang.in (D_FRONTEND_OBJS): Add d/dsymbolsem.o, d/semantic2.o,
d/semantic3.o, and d/templateparamsem.o.
* d-compiler.cc (Compiler::genCmain): Update calls to semantic
entrypoint functions.
* d-lang.cc (d_parse_file): Likewise.
* typeinfo.cc (make_frontend_typeinfo): Likewise.
a3b38b7781