These were guarded by $disabled{tests}. However, 'tests' is disabled
if we configure 'no-stdio', which means that we don't detect the lack
of OPENSSL_NO_STDIO guards in our public header files. So we move the
generation and build of test/buildtest_*.c to be unconditional.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Generate small test programs to check that external programs can be
built with our stuff at a very basic level.
For now, they check that each of our header files can be included
individually without compile failure.
Reviewed-by: Rich Salz <rsalz@openssl.org>
