Tidy up how __sigaction14_sigtramp.c is added to SRCS.

Use a constructor to get the cache_info.
However memset can be called before the constructor is called, just treat
those as simple fills.
Add CACHE_INFO_DCACHE_LINE_SIZE to assym.h and use it

branches: 1.13.6; 1.13.12;
Kill _NOREGNAMES. Everything should be using %rX now. If it doesn't it
soon will.

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 files.
[this is all in preperation for secure plt support]

G/c KMSRCS and KMINCLUDES now that we have common/lib/libc

Move PowerPC compat files from arch/powerpc to compat/arch/powerpc.

libgcc has __fixunsdfsi and __fixunssfsi, so don't build
the softfloat versions of these.

Fixes PR toolchain/24509 from Masao Uebayashi.

Add siginfo signal trampoline.

Enable the libc-provided signal trampoline. The old __sigaction14
entry point has been replaced by the new __sigaction14() which is a
wrapper around the __sigaction_sigtramp system call (which is itself
not directly exposed outside of libc).

No shared library version change is necessary; no new symbols
are exposed outside of libc.

Add bzero.S and strlen.S to the stuff that gets installed in libkern.

Add PPC assembler routines for ffs(3), bzero(3) and memset(3).

Compile in soft-float support if MKSOFTFLOAT != "no".

branches: 1.2.10;
Modify syncicache on PowerPC from an inline to a real function.
Support different cache line sizes with the same object code in userland.
While here, move the function to implementation name space.

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>