doc: Update for glibc 2.35

[Bruno Haible]

This patch adds Gnulib documentation for the functions that were added
in glibc 2.35. Many of them are specified in ISO C 23, which is why
I add them under doc/posix-functions/.


2024-06-14  Bruno Haible  <bruno@clisp.org>

        doc: Update for glibc 2.35.
        * doc/glibc-functions/_dl_find_object.texi: New file.
        * doc/glibc-functions/epoll_pwait2.texi: New file.
        * doc/glibc-functions/posix_spawn_file_actions_addtcsetpgrp_np.texi: New
        file.
        * doc/posix-functions/dfmal.texi: New file.
        * doc/posix-functions/dsqrtl.texi: New file.
        * doc/posix-functions/ffma.texi: New file.
        * doc/posix-functions/ffmal.texi: New file.
        * doc/posix-functions/fmaximum.texi: New file.
        * doc/posix-functions/fmaximum_mag.texi: New file.
        * doc/posix-functions/fmaximum_mag_num.texi: New file.
        * doc/posix-functions/fmaximum_mag_numf.texi: New file.
        * doc/posix-functions/fmaximum_mag_numl.texi: New file.
        * doc/posix-functions/fmaximum_magf.texi: New file.
        * doc/posix-functions/fmaximum_magl.texi: New file.
        * doc/posix-functions/fmaximum_num.texi: New file.
        * doc/posix-functions/fmaximum_numf.texi: New file.
        * doc/posix-functions/fmaximum_numl.texi: New file.
        * doc/posix-functions/fmaximumf.texi: New file.
        * doc/posix-functions/fmaximuml.texi: New file.
        * doc/posix-functions/fminimum.texi: New file.
        * doc/posix-functions/fminimum_mag.texi: New file.
        * doc/posix-functions/fminimum_mag_num.texi: New file.
        * doc/posix-functions/fminimum_mag_numf.texi: New file.
        * doc/posix-functions/fminimum_mag_numl.texi: New file.
        * doc/posix-functions/fminimum_magf.texi: New file.
        * doc/posix-functions/fminimum_magl.texi: New file.
        * doc/posix-functions/fminimum_num.texi: New file.
        * doc/posix-functions/fminimum_numf.texi: New file.
        * doc/posix-functions/fminimum_numl.texi: New file.
        * doc/posix-functions/fminimumf.texi: New file.
        * doc/posix-functions/fminimuml.texi: New file.
        * doc/posix-functions/fsqrt.texi: New file.
        * doc/posix-functions/fsqrtl.texi: New file.
        * doc/gnulib.texi: Include them.

https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=31875a8d21d5487c28adc49b5a226a0d97197f37