random_mutex is locked, because
* a cancellation point may occur during fprintf(), and no cancellation handler
had been installed, and
* the XSH5 specifcation of these functions does not permit output to stderr.
Therefore, in initstate() and setstate(), return a null pointer if the supplied
state is not valid. This also fixes a bug in setstate() which caused corrupt
state information being used despite printing an error message.
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.
This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.