* lib/gdb.exp: Fix runto.

* gdb.base/signals.exp: Check for a gdb,nosignals feature of
	the target.

	* gdb.base/watchpoint.exp: Fix regexp.

Random miscellaneous fixes. Gotta dig up all these global variables someday..

gdb/testsuite/gdb.base/signals.exp

@@ -1,7 +1,7 @@
-if $nosignals {
+if [target_info exists gdb,nosignals] {
     verbose "Skipping signals.exp because of nosignals."
     continue
-	}
+}
 
 if $tracelevel then {
 	strace $tracelevel

gdb/testsuite/gdb.base/watchpoint.exp

@@ -379,7 +379,7 @@ proc test_stepping {} {
 
 	send_gdb "finish\n"
 	expect {
-	    -re "Run.*exit from.*marker1.*main.* at" { }
+	    -re "Run.*exit from.*marker1.* at" { }
 	    default { fail "finish from marker1" ; return }
 	}
 	expect {

gdb/testsuite/lib/gdb.exp

@@ -267,6 +267,7 @@ proc runto { function } {
 	    return 0
 	}
     }
+    return 1
 }
 
 #