PIC code clobbers %r30 so we need to update the saved oucp with
caller's %r30 manually. Makes old context happy when it needs to do
more function calls after restore.

Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

Switch to the PIC_GOTSETUP/PIC_TOCSETUP macros for PIC code. Now libc
will be built to use secureplt by default.

Use END(foo) everywhere.
Make __cerror hidden.
Use non-PLT calls to __cerror.
Use assym.h when appropriate.
Use addi to adjust stack instead of loading it.
Add __RCSIDs
Force -D_NOREGNAMES for all .S

Use END(foo) everywhere.
Make __cerror hidden.
Use non-PLT calls to __cerror.
Use assym.h when appropriate.
Use addi to adjust stack instead of loading it.
Add __RCSIDs
Force -D_NOREGNAMES for all .S files.
[this is all in preperation for secure plt support]

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Remove clause 3 and 4 from TNF licenses

Convert to use register prefixes.

Merge the nathanw_sa branch.