- Update to 7.52.1
Bugfixes:
* CVE-2016-9594: unititialized random bsc#1016738

- Update to 7.52.0
Changes:
* nss: map CURL_SSLVERSION_DEFAULT to NSS default
* vtls: support TLS 1.3 via CURL_SSLVERSION_TLSv1_3
* curl: introduce the --tlsv1.3 option to force TLS 1.3
* curl: Add --retry-connrefused
* proxy: Support HTTPS proxy and SOCKS+HTTP(s)
* add CURLINFO_SCHEME, CURLINFO_PROTOCOL, and %{scheme}
* curl: add --fail-early
Bugfixes:
* CVE-2016-9586: printf floating point buffer overflow
* curl -w: added more decimal digits to timing counters
* easy: Initialize info variables on easy init and duphandle
* http2: Don't send header fields prohibited by HTTP/2 spec
* ssh: check md5 fingerprints case insensitively (regression)
* openssl: initial TLS 1.3 adaptions
* SPNEGO: Fix memory leak when authentication fails
* realloc: use Curl_saferealloc to avoid common mistakes
* openssl: make sure to fail in the unlikely event that PRNG
seeding fails
* URL-parser: for file://[host]/ URLs, the [host] must be localhost
* timeval: prefer time_t to hold seconds instead of long
* glob: fix [a-c] globbing regression
* curl.1: Clarify --dump-header only writes received headers
* http2: Fix address sanitizer memcpy warning
* http2: Use huge HTTP/2 windows