doc: Update info about *printf

[Bruno Haible]

A couple of patches that improve the information about the *printf functions'
workarounds.


2024-06-24  Bruno Haible  <bruno@clisp.org>

        doc: Update info about *printf.
        * doc/*-functions/*printf.texi: Update info regarding size specifiers
        w8, wf8, etc.

2024-06-24  Bruno Haible  <bruno@clisp.org>

        doc: Update info about *printf.
        * doc/*-functions/*printf.texi: Update info regarding %B directive.

2024-06-24  Bruno Haible  <bruno@clisp.org>

        doc: Update info about *printf.
        * doc/*-functions/*printf.texi: Update info regarding %b directive.

2024-06-24  Bruno Haible  <bruno@clisp.org>

        doc: Update info about *printf.
        * doc/*-functions/*printf.texi: Update info regarding %f, %e, %g
        directives.

2024-06-24  Bruno Haible  <bruno@clisp.org>

        doc: Update info about *printf.
        * doc/*-functions/*printf.texi: Update info regarding %a directive.
        * m4/printf.m4 (gl_PRINTF_DIRECTIVE_A): Likewise. Improve bits
        assignment in return value.

2024-06-24  Bruno Haible  <bruno@clisp.org>

        doc: Update info about obstack_*printf.
        * doc/glibc-functions/obstack_*printf.texi: Update info.

0001-doc-Update-info-about-obstack_-printf.patch
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0002-doc-Update-info-about-printf.patch
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0003-doc-Update-info-about-printf.patch
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0004-doc-Update-info-about-printf.patch
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0005-doc-Update-info-about-printf.patch
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0006-doc-Update-info-about-printf.patch
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