• Avoid misclassifying Clang as GCC in Test::Net::SSLeay's can_thread()
  function. This fixes test failures in 61_threads-cb-crash.t and
  62_threads-ctx_new-deadlock.t on OpenBSD and FreeBSD (and possibly other OSes
  too). Fixes GH-350.
  
• Add the following constants for OpenSSL_version():
  
  • OPENSSL_CPU_INFO
    
  • OPENSSL_FULL_VERSION_STRING
    
  • OPENSSL_MODULES_DIR
    
  • OPENSSL_VERSION_STRING
    These constants are new in OpenSSL 3.0.0 release.
    
• Update test 03_use.t to print information returned by the new constants.
  
• Add more information to 03_use.t print output, including printing
  OPENSSL_VERSION_NUMBER as a 32bit hex number.
  
• Add the following constants for OPENSSL_info() added in OpenSSL 3.0.0.
  
  • OPENSSL_INFO_CONFIG_DIR
    
  • OPENSSL_INFO_CPU_SETTINGS
    
  • OPENSSL_INFO_DIR_FILENAME_SEPARATOR
    
  • OPENSSL_INFO_DSO_EXTENSION
    
  • OPENSSL_INFO_ENGINES_DIR
    
  • OPENSSL_INFO_LIST_SEPARATOR
    
  • OPENSSL_INFO_MODULES_DIR
    
  • OPENSSL_INFO_SEED_SOURCE
    
• Expose OPENSSL_info(), OPENSSL_version_major(),
  OPENSSL_version_minor(), OPENSSL_version_patch(),
  OPENSSL_version_pre_release() and
  OPENSSL_version_build_metadata() added in OpenSSL
  3.0.0. Update 03_use.t diagnostics and 04_basic.t tests to
  use these functions.
  
• Clarify documentation of OpenSSL_version_num(), SSLeay(),
  SSLeay_version() and OpenSSL_version().
  
• Add notes to OpenSSL_version_num() and SSLeay() on how to
  determine if the library is OpenSSL or LibreSSL and how to
  interpret the version number these functions return.
  
• Add constants OPENSSL_VERSION_MAJOR, OPENSSL_VERSION_MINOR
  and OPENSSL_VERSION_PATCH. Update
  OPENSSL_version_major/minor/patch documentation to describe
  how these library functions relate to Net-SSLeay compile
  time constants. Add tests to verify the constants and
  functions return equal values.