* sysdeps/unix/sysv/linux/arm/kernel-features.h

	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	(__ASSUME_SIGFRAME_V2): Define for 2.6.18 and later.
	* sysdeps/unix/sysv/linux/arm/eabi/sigrestorer.S
	(__default_sa_restorer): Rename to __default_sa_restorer_v1.
	Don't define if __ASSUME_SIGFRAME_V2.
	(__default_rt_sa_restorer): Rename to
	__default_rt_sa_restorer_v1.  Don't define if
	__ASSUME_SIGFRAME_V2.
	(__default_sa_restorer_v2, __default_rt_sa_restorer_v2): New.
	* sysdeps/unix/sysv/linux/arm/nptl/Versions
	(__default_sa_restorer_v1, __default_rt_sa_restorer_v1,
	__default_sa_restorer_v2, __default_rt_sa_restorer_v2): Add to
	GLIBC_PRIVATE.
	* sysdeps/unix/sysv/linux/arm/sigaction.c [__ARM_EABI__]
	(__default_sa_restorer_v1, __default_sa_restorer_v2,
	__default_rt_sa_restorer_v1, __default_rt_sa_restorer_v2):
	Declare.
	(__default_sa_restorer, __default_rt_sa_restorer): Define as
	macros depending on kernel version.