Problems buiding texinfo prereleases on Solaris

[Arthur Haas]

Hi.

Both the 4.12.91 and 4.12.92 test releases fail to build on my Solaris
10 machines due to the use of memmem() in info/window.c. The makinfo
binary does build, though.
Perhaps the memmem code in the current gnulib package can be pulled into
the gnulib/lib subdirectory?

While writing let me say thanks to the maintainers of the texinfo
package.

Art Haas