tdelete
=======

POSIX specification: http://www.opengroup.org/susv3xsh/tdelete.html

Gnulib module: tsearch

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: mingw, BeOS.

  * tdelete returns NULL when removing the last element of a tree on some platforms: OpenBSD 4.0.

Portability problems not fixed by Gnulib: