restore use of .type in asm, but use modern @function (vs %function)

this seems to be necessary to make the linker accept the functions in
a shared library (perhaps to generate PLT entries?)

strictly speaking libc-internal asm should not need it. i might clean
that up later.

src/signal/i386/restore.s

@@ -1,10 +1,12 @@
 .global __restore
+.type __restore,@function
 __restore:
 	popl %eax
 	movl $119, %eax
 	int $0x80
 
 .global __restore_rt
+.type __restore_rt,@function
 __restore_rt:
 	movl $173, %eax
 	int $0x80

src/signal/i386/sigsetjmp.s

@@ -1,4 +1,5 @@
 .global sigsetjmp
+.type sigsetjmp,@function
 sigsetjmp:
 	mov 4(%esp),%eax
 	mov 8(%esp),%ecx

src/signal/x86_64/restore.s

@@ -1,5 +1,7 @@
 .global __restore_rt
 .global __restore
+.type __restore_rt,@function
+.type __restore,@function
 __restore_rt:
 __restore:
 	movl $15, %eax

src/signal/x86_64/sigsetjmp.s

@@ -1,5 +1,6 @@
 /* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */
 .global sigsetjmp
+.type sigsetjmp,@function
 sigsetjmp:
 	andl %esi,%esi
 	movq %rsi,64(%rdi)