Compress blank lines

Suppress repeated empty lines left after automated code removal.
This change was made by filtering every source code file through
"cat -s".

signal.c

@@ -40,7 +40,6 @@
 #include <sys/user.h>
 #include <fcntl.h>
 
-
 #ifdef HAVE_SYS_REG_H
 # include <sys/reg.h>
 # ifndef PTRACE_PEEKUSR
@@ -62,8 +61,6 @@
 # undef pt_all_user_regs
 #endif
 
-
-
 #ifdef IA64
 # include <asm/ptrace_offsets.h>
 #endif
@@ -376,7 +373,6 @@ print_sigset(struct tcb *tcp, long addr, int rt)
 		printsigmask(&ss, rt);
 }
 
-
 #ifndef ILL_ILLOPC
 #define ILL_ILLOPC      1       /* illegal opcode */
 #define ILL_ILLOPN      2       /* illegal operand */
@@ -509,8 +505,6 @@ typedef struct siginfo
 
 #endif
 
-
-
 static const struct xlat siginfo_codes[] = {
 #ifdef SI_KERNEL
 	{ SI_KERNEL,	"SI_KERNEL"	},
@@ -770,9 +764,6 @@ printsiginfo(siginfo_t *sip, int verbose)
 	tprints("}");
 }
 
-
-
-
 int
 sys_sigsetmask(struct tcb *tcp)
 {
@@ -791,8 +782,6 @@ sys_sigsetmask(struct tcb *tcp)
 	return 0;
 }
 
-
-
 #ifdef HAVE_SIGACTION
 
 struct old_sigaction {
@@ -814,7 +803,6 @@ sys_sigaction(struct tcb *tcp)
 	sigset_t sigset;
 	struct old_sigaction sa;
 
-
 	if (entering(tcp)) {
 		printsignal(tcp->u_arg[0]);
 		tprints(", ");
@@ -898,10 +886,8 @@ sys_signal(struct tcb *tcp)
 	return 0;
 }
 
-
 #endif /* HAVE_SIGACTION */
 
-
 int
 sys_sigreturn(struct tcb *tcp)
 {
@@ -1156,8 +1142,6 @@ static const struct xlat sigaltstack_flags[] = {
 	{ 0,		NULL		},
 };
 
-
-
 static int
 print_stack_t(struct tcb *tcp, unsigned long addr)
 {
@@ -1240,7 +1224,6 @@ sys_kill(struct tcb *tcp)
 	return 0;
 }
 
-
 int
 sys_tgkill(struct tcb *tcp)
 {
@@ -1267,8 +1250,6 @@ sys_sigpending(struct tcb *tcp)
 	return 0;
 }
 
-
-
 int
 sys_rt_sigprocmask(struct tcb *tcp)
 {
@@ -1301,7 +1282,6 @@ sys_rt_sigprocmask(struct tcb *tcp)
 	return 0;
 }
 
-
 /* Structure describing the action to be taken when a signal arrives.  */
 struct new_sigaction
 {
@@ -1320,7 +1300,6 @@ struct new_sigaction32
 	uint32_t sa_mask[2 * (NSIG / sizeof(long) ? NSIG / sizeof(long) : 1)];
 };
 
-
 int
 sys_rt_sigaction(struct tcb *tcp)
 {