The spec only allows the characters [A-Za-z0-9-].

Fix on b2b2e1c7.
Fixes #27316; bugfix on 0.2.9.4-alpha.

It's possible for a unit test to report success via its pipe, but to
fail as it tries to clean up and exit.  Notably, this happens on a
leak sanitizer failure.

Fixes bug 27658; bugfix on 0.2.2.4-alpha when tinytest was
introduced.

Fixes bug 27344, where we'd break compatibility with old tors by
rejecting RSA1024 and DH1024.

It is not supported, and always fails. Some compilers warn about the
function pointer cast on 64-bit Windows.

Fixes bug 27461; bugfix on 0.2.2.23-alpha.

gcc 8 warns that extend_info_t.nickname might be truncated by strncpy().

But it doesn't know that nickname can either contain a hex id, or a
nicknames. hex ids are only used for general and HSDir circuits.

Fixes bug 27463; bugfix on 0.1.1.2-alpha.

GetProcAddress() returns FARPROC, which is (long long int(*)()) on
64-bit Windows:
https://msdn.microsoft.com/en-us/library/windows/desktop/ms683212(v=vs.85).aspx

But GetAdaptersAddresses() is (long unsigned int(*)()), on both 32-bit
and 64-bit Windows:
https://docs.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-getadaptersaddresses

So gcc 8 issues a spurious "incompatible function pointer" warning
about the cast to GetAdaptersAddresses_fn_t.

Silence this warning by casting to a void function pointer, before
the cast to GetAdaptersAddresses_fn_t.

This issue is already fixed by 26481 in 0.3.5 and later, by removing
the lookup and cast.

Fixes bug 27465; bugfix on 0.2.3.11-alpha.

When we use echo in Travis, don't pass a --flag as the first argument.

Fixes bug 27418; bugfix on 0.3.4.7-rc.

When a Travis build fails, and showing a log fails, keep trying to
show the other logs.

Fixes bug 27453; bugfix on 0.3.4.7-rc.

Before running make test-network-all, delete old logs and test result
files, to avoid spurious failures.

Fixes bug 27295; bugfix on 0.2.7.3-rc.

Part of 27295.

test.c no longer uses lround(), so we don't need to declare it,
and we can use math.h for fabs().

Fixes bug 27185; bugfix on 0.2.2.2-alpha.

It's redundant, because all the non-default builds use gcc on Linux.

Part of 27252.

Part of 27252.

Part of 27252.

Part of #27252.

Unlike the old test, this test no will no longer mess around with
the forbidden internals of any openssl data structures.

Additionally, it verifies several other behaviors of
tor_tls_cert_matches_key() that we had wanted to verify, such as
the possibility of the certificate's key not matching.

Fixes bug 27226; bugfix on 0.2.5.1-alpha.

This allows us to mock our own tor_tls_get_peer_certificate()
function in order to test ..cert_matches_key(), which will in turn
allow us to simplify test_tortls_cert_matches_key() considerably.

Prep work for the fix for 27226.

Part of 24629.

Implements 27087.

Part of ticket 26952.

Tor 0.2.9 needs extra help to find OpenSSL on macOS.

Part of 24629.

Creating the configure flags once avoids inconsistent flags
between configure and distcheck configure.

Echoing the flags helps developers work out what configure is
doing.

(Backported to 0.2.9 and later as a precaution.)

Fixes 27088 on 0.3.4.1-alpha, adds logging in previous releases.