v1.1.0

Notable changes:

• overload comparison operators for pthread_t.
• add getexepath() which returns the executable path of a given
  process id.
• add get_num_online_cpus() which returns the number of online CPUs.
• add default constructor for __tlssim class.
• add __guess_fd_ue() and __guess_ue() which guess and returns the
  ccsid of a file or string.
• add __print_zoslib_help() which prints help information.
• add __update_envar_settings() which allows zoslib envars to be
  updated after zoslib is initialized.
• add __update_envar_names() which allows the names of zoslib envars
  to be changed after zoslib is initialized.
• add __get_os_level() and __is_os_level_at_or_above() which can be
  used to determine the current OS level.
• add __get_stack_start() and __iterate_stack_and_get() which can be
  used to get the stack start address for the current thread.
• add __is_stfle_available() which returns if STFLE instruction is
  available.
• ZOSLIB will now be built as a shared library by default.
• add __is_vxf_available() which returns if the current z arch
  includes Vector Extension Facility.
• add __is_vef1_available() which returns if the current z arch
  includes Vector Enhancements Facility 1.
• new headers zos-bpx.h, zos-char-util.h, zos-io.h, zos-setlibpath.h,
  zos-tls.h added.