Simplify strncat.

We rewrite strncat to use strnlen and malloc calls which simplifies code
an is faster as these functions are better optimized than original code.
2014-12-19  Steve Ellcey  <sellcey@imgtec.com>

	* sysdeps/mips/sys/asm.h (PTR_ADDU): Use addu on mips32r6/mips64r6.
	(PTR_ADDIU): Use addiu for mips32r6/mips64r6.
	(PTR_SUBU): Use subu for mips32r6/mips64r6.
	(PTR_SUBIU): Use subu for mips32r6/mips64r6 (subiu does not exist).
	* sysdeps/mips/machine-gmon.h (PTR_ADDU_STRING) Use addu for
	mips32r6/mips64r6.
	(PTR_SUBU_STRING) Use subu for mips32r6/mips64r6.
2014-12-19  Steve Ellcey  <sellcey@imgtec.com>

	* sysdeps/mips/addmul_1.S (__mpn_addmul_1): Use mulu/muhu instead
	of multu on MIPSr6.
	* sysdeps/mips/mul_1.S (__mpn_mul_1): Ditto.
	* sysdeps/mips/submul_1.S (__mpn_submul_1): Ditto.
	* sysdeps/mips/mips64/addmul_1.S (__mpn_addmul_1): Ditto.
	* sysdeps/mips/mips64/mul_1.S (__mpn_mul_1): Ditto.
	* sysdeps/mips/mips64/submul_1.S (__mpn_submul_1): Ditto.
Remove trailing white space.
tilegx: fix strstr to build and link better

The two_way_short_needle() routine included from str-two-way.h
is not used, so mark it so to avoid compiler warnings.

Calling strnlen() breaks linknamespace tests, so change it
to __strnlen().
tile: provide localplt.data with __tls_get_addr optional
manual: Correct guarantee about pointers compared by qsort()

C99, C11, POSIX, and the glibc implementation do guarantee that the
pointers passed to the qsort comparison function lie within the array.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Remove @PLT from "call _dl_init@PLT" in _dl_start_user

_dl_start_user in ld.so calls the local function _dl_init.  There is no
need to go through PLT.

	* sysdeps/i386/dl-machine.h (_dl_start_user): Remove @PLT
	from "call _dl_init@PLT".
	* sysdeps/x86_64/dl-machine.h (_dl_start_user): Likewise.
	from "call _dl_init@PLT".
Fix changelog typo
m68k: remove @PLTPC from _dl_init call
Add hidden __tls_get_addr/___tls_get_addr alias

__tls_get_addr/___tls_get_addr is always defined in ld.so.  There is
no need to call them via PLT inside ld.so.  This patch adds the hidden
__tls_get_addr/___tls_get_addr aliases and calls them directly from
_dl_tlsdesc_dynamic.  There is no need to set up the EBX register in
i386 _dl_tlsdesc_dynamic when calling the hidden ___tls_get_addr.

	* elf/dl-tls.c (__tls_get_addr): Provide the hidden definition
	if not defined.
	* sysdeps/i386/dl-tls.h (___tls_get_addr): Provide the hidden
	definition.
	* sysdeps/i386/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Call the
	hidden ___tls_get_addr.
	* sysdeps/x86_64/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Call the
	hidden __tls_get_addr.
	* sysdeps/generic/localplt.data (__tls_get_addr): Removed.
	* sysdeps/unix/sysv/linux/i386/localplt.data (___tls_get_addr):
	Likewise.
Compile vismain with -fPIC and link with -pie
Replace %ld with %jd and cast to intmax_t
Replace %ld with %jd and cast to intmax_t
Replace %ld with %jd and cast to intmax_t
Replace %ld with %jd and cast to intmax_t
Replace %ld/%lu with %jd/%ju and cast to intmax_t/uintmax_t
Replace %ld with %jd and cast to intmax_t
Replace %ld with %jd and cast to intmax_t
Replace %ld with %jd and cast to intmax_t