[openssl/tools] 1d0461: Add a performance test for X509_CTX_CTX_get1_issuer()

[Matt Caswell]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/tools
  Commit: 1d046129726ba142a495626ac17548ba8de99ee4
      https://github.com/openssl/tools/commit/1d046129726ba142a495626ac17548ba8de99ee4
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-05-30 (Tue, 30 May 2023)

  Changed paths:
    M perf/Makefile
    M perf/README
    A perf/x509storeissuer.c

  Log Message:
  -----------
  Add a performance test for X509_CTX_CTX_get1_issuer()

This test just call X509_STORE_CTX_get1_issuer() in a loop with an empty
store. This function is usually called as part of chain building during a
certificate verify operation.

Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/tools/pull/150)