make the 2nd argument to __memmove_chk() const

Create the stpncpy() inline only when GCC>=4.8 || clang

Mirrors the stpncpy() wrapper macro and avoids the following:
warning: implicit declaration of function ‘__builtin___stpncpy_chk’

Apparently clang pretends to be gcc 4.2 but is secretly much awesomer
than gcc 4.2, so enable the stpncpy() wrapper also for clang.

Wrap stpncpy() iff GNUC_PREREQ(4,8). Fixes USE_SSP=yes builds
with gcc 4.5.

add stpncpy()

gcc-4.8.1 is has a builtin stpncpy, but is missing the __builtin_ ssp
equivalent. go figure.

Revert my last change. I'm not convinced it is correct and while it seems
to fix some build problems it might cause others.

Add missing declarations for SSP versions of stpcpy(3) and stpncpy(3).

add stp{,n}cpy

Always provide *_chk prototypes. Fixes DBG=-g build of libc.

add some prototypes for checked string functions

Remove clause 3 and 4 from TNF licenses

Match usage of FORTIFY_SOURCE on other platforms by not requiring special
include path: the normal header files now include the "SSP" ones (which one
should note are not really named right: SSP and F

Match usage of FORTIFY_SOURCE on other platforms by not requiring special
include path: the normal header files now include the "SSP" ones (which one
should note are not really named right: SSP and FORTIFY_SOURCE are independent
features).

Disable USE_SSP on targets where the compiler doesn't support it at all
(mips, alpha) or it's known broken (sh3). But enable FORTIFY_SOURCE,
without SSP, on those platforms -- tested on mipsel.

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Move FORTIFY_SOURCE implementation from the somewhat ill-named "libssp"
(what other systems keep in libssp, we already have in libc) into libc
to match what other systems with FORTIFY_SOURCE do. Goo

Move FORTIFY_SOURCE implementation from the somewhat ill-named "libssp"
(what other systems keep in libssp, we already have in libc) into libc
to match what other systems with FORTIFY_SOURCE do. Goodbye, libssp
dependency in libraries and executables. Discussed with christos and
mrg; Christos will merge the headers to get us the rest of the way to a
FORTIFY_SOURCE implementation that works as others' code expects.

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