Finish fixing glib compilation issue.

M  .cpl/params/glib:
  add 'lib64' directory to look for libffi.
  Modify 'glib/glibconfig.h' and 'touch gilb/glibconfig-stamp'
    to avoid re-generztion.
  Modify 'glib/gatomic.c' api for 'g_atomic_int_get'
    and 'g_atomic_pointer_get'.
M  .cpl/scripts/get_page_glib:
  Use wget with '--no-check-certificat' to sidestep a certificate issue
M  .cpl/scripts/get_url_glib:
  Use wget with '--no-check-certificat' to sidestep a certificate issue