AUTH_DEFAULT conflicts

[Shigeharu Kondo]

 When making cups-1.35 in HPUX11, "#define AUTH_DEFAULT" of "/usr/include/prot.h" and "scheduler/auth.h " conflicts.
 And compilation was not stopped.

 When "/admin/conf" is posted in this state, cupsd is stopped by segmentation fault.

 Segmentation fault occurred by log printout because the part where "DefaultAuthType" in "scheduler/auth.c" is set was failed.

I'm Japanese. And I'm not good at English.
I'm sorry.