* i386-nto-tdep.c (i386nto_supply_gregset, i386nto_supply_fpregset):

	* i386-nto-tdep.c (i386nto_supply_gregset, i386nto_supply_fpregset):
	Add REGCACHE parameter.  Use it instead of current_regcache.
	(i386nto_supply_regset): Add REGCACHE parameter, pass it to
	i386nto_supply_gregset and i386nto_supply_fpregset.
	(i386nto_regset_fill): Add REGCACHE parameter; use it instead
	of current_regcache.

	* nto-procfs.c (procfs_fetch_registers): Pass current_regcache to
	nto_supply_ helper functions.
	(procfs_store_registers): Pass current_regcache to nto_regset_fill.

	* nto-tdep.c (nto_dummy_supply_regset): Add REGCACHE parameter.

	* nto-tdep.h (struct nto_target_ops): Add REGCACHE parameter to
	supply_greget, supply_fpregset, supply_altregset, supply_regset,
	and regset_fill member function pointers.
	(nto_dummy_supply_regset): Adapt prototype.