[glib] (8 commits) ...Merge branch 'wip/smcv/address-sanitizer' into 'master'

[Simon McVittie <smcv src gnome org>]

Summary of changes:

  def3e33... error test: Don't test programmer error if asked not to (*)
  5685546... gio: Don't run gsocketclient-slow test under sanitizers (*)
  9880478... glib-private: Add infrastructure to detect AddressSanitizer (*)
  9fef98c... gtestutils: Default to -m no-undefined under AddressSanitiz (*)
  0237930... glib-private: Add wrappers for telling AddressSanitizer to  (*)
  41ed1c6... gutils: Tell AddressSanitizer not to track previous XDG dir (*)
  f378352... tests: Mark tests with AddressSanitizer-detected leaks (*)
  07bf886... Merge branch 'wip/smcv/address-sanitizer' into 'master'

(*) This commit already existed in another branch; no separate mail sent