Restore ucontext ABI for soft-float sh4.
Adjust pointers to triplets in netgroup query data (BZ #16474)

The _nss_*_getnetgrent_r query populates the netgroup results in the
allocated buffer and then sets the result triplet to point to strings
in the buffer.  This is a problem when the buffer is reallocated since
the pointers to the triplet strings are no longer valid.  The pointers
need to be adjusted so that they now point to strings in the
reallocated buffer.
ARM: Fix clone build for ARMv4

ARMv4 does not have the blx instruction, so use the BLX macro which
handles abstracting this for us.

Build tested for armv7, armv4t and armv4.

ports/ChangeLog.arm:

2014-01-24  Will Newton  <will.newton@linaro.org>

	[BZ #16499]
	* sysdeps/unix/sysv/linux/arm/clone.S: Use BLX macro instead
	of blx instruction directly.
alpha: Fix tls-macros.h

Reported to the gcc bugzilla, there was a missing dependency on $gp
that let the compiler generated $gp reload be scheduled across the
macros here.
alpha: Update libm-test-ulps
tile: Regenerate libm-test-ulps
Move SH libm-test-ulps to sysdeps/sh and regenerate it.