"Your tests in configure to decide if you need each of the functions are
testing a different variable name from the one that gets set so you always
create an rfuncs.h that has all three definitions even if you dont need them,
which leads to problems on systems that provide some but not all of them
natively." Correction by Mark Davies.
Update to revision 1.0.3 to correct mistake where config subdirectory
contained symbolic links:
config.guess -> /usr/pkgsrc/mk/gnu-config/config.guess
config.sub -> /usr/pkgsrc/mk/gnu-config/config.sub
that were a consequence of the tarball being created after a build
inm pkgsrc (files were replaced with symbolic links).
strerror_r(). These are thread safe versions of the corresponding functions
without the "_r". The package is implemented so that it may be used simply
by including it's buildlink3.mk file.