[fftw3] Fixed the issue that some functions are dynamically exported under Windows

[jimwang118]

Fixes #33322

api.c.obj : error LNK2019: unresolved external symbol fftw_imax referenced in function fftw_plan_with_nthreads
api.c.obj : error LNK2001: unresolved external symbol fftw_mksolver_ct_hook
api.c.obj : error LNK2001: unresolved external symbol fftw_mksolver_hc2hc_hook
conf.c.obj : error LNK2019: unresolved external symbol fftw_solvtab_exec referenced in function fftw_threads_conf_standard
ct.c.obj : error LNK2001: unresolved external symbol fftw_dft_solve
dft-vrank-geq1.c.obj : error LNK2001: unresolved external symbol fftw_dft_solve
vrank-geq1-rdft2.c.obj : error LNK2019: unresolved external symbol fftw_ops_zero referenced in function applicable
ct.c.obj : error LNK2001: unresolved external symbol fftw_ops_zero
dft-vrank-geq1.c.obj : error LNK2001: unresolved external symbol fftw_ops_zero
hc2hc.c.obj : error LNK2001: unresolved external symbol fftw_ops_zero
rdft-vrank-geq1.c.obj : error LNK2001: unresolved external symbol fftw_ops_zero

Exports some internal symbols so that we won't have to WITH_COMBINED_THREADS for Win32.

• Changes comply with the maintainer guide.
• SHA512s are updated for each updated download.
• The "supports" clause reflects platforms that may be fixed by this new version.
• Any fixed CI baseline entries are removed from that file.
• Any patches that are no longer applied are deleted from the port's directory.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is added to each modified port's versions file.

Usage test pass with following triplets:

x64-windows

[Neumann-A]

What is this?

[jimwang118]

X(mksolver_ct_hook) and X(mksolver_hc2hc_hook) are variables in which case we have to explicitly modify them with __declspec(dllimport) in the headers.

[dg0yt]

I think the questions is who is dllexporting these variables. This is a very strange condition to have in this place where everyody would expect a macro.