texlive: fix build with Perl 5.38

[cho-m]

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Overriding CCFLAGS results in mismatches between modules built with perl Build.PL and perl Makefile.PL.

I think the reason we used CCFLAGS was to help Tk find freetype. Instead, try using X11INC and X11LIB similar to MacPorts and Nix.

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closes #155568

[p-linnane]

Great work! @cho-m! Thank you!