In recent versions of mbed TLS, several symbols are moved to
libmbedcrypto.

Fixes: #115

Fixes: #475

This seems to be the idiomatic way to fix libressl compatibility issues,
judging by what most other open source projects seem to be doing.

I've confirmed that transmission builds with libressl for me after this
patch is applied.

LibreSSL 2.7 adds OpenSSL 1.1 API

See also: https://bugs.freebsd.org/226953
Signed-off-by: Bernard Spil <brnrd@FreeBSD.org>

Fix compile errors for 2.9x

It was always 0.0% as long as the torrent was not finished.

Field etaDLSpeedCalculatedAt was set too early, causing the condition
following it to always be false. The same for etaULSpeedCalculatedAt.

Set the first version component to be the same as the last Subversion-based
release build version and add two more components (major and minor version
numbers). To allow for nightly build updates this should probably include
another component (e.g. build timestamp), but we're not there yet.

Tracker error messages are inadequately output encoded when rendered by the
tracker information page inside the WebUI, allowing a malicious tracker to
inject an XSS payload into the page. Esploiting this issue allows an
attacker to supply arbitrary client-side code that will ultimately be
rendered and executed within the end user's web browser.

Found by Rory McNamara (Gotham Digital Science). CVE pending.

This will prevent injection of arbitrary HTML when multiple torrents are
selected. Follow-up to the previous commit.