This version adds a new RegSet API, and fixes the following:
 - CVE-2019-19012
 - CVE-2019-19203
 - CVE-2019-19204
 - CVE-2019-19246
 - some problems (found by libFuzzer test)

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

This release incorporates fixes for CVE-2019-13224 and CVE-2019-13225,
and "fixed many problems (found by libfuzzer programs)."

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

The patches were taken from upstream commits.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

oniguruma is a regular expression library for different character
encodings.

It is a dependency of current version of libevhtp, and is currently only
producing a static library, not generating an installable package.

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>