Some random fixes

* General: Small fixes (indentation, typos, clean-up of code)
* ltrace.c: Close output file on exit
* ltrace.c: use getenf("HOME") instead of getpwuid(geteuid())->pw_dir
* read_config_file.c, display_args.c: remove "ignore" argtype;
  that's what "void" is for
* packaging/debian/: misc fixes, sync with version 0.5-1
* etc/ltrace.conf: added more system calls
* testsuite/ltrace.minor/trace-clone.c: sleep(1) to avoid earlier
  termination of process
* sysdeps/linux-gnu/trace.c: trace_pid(): reverted Petr's patch
  to wait for child to stop, as it stopped following clone()
* process_event.c: Disable breakpoints before doing fork() (again!),
  to make children work as expected
diff --git a/ltrace.c b/ltrace.c
index 881ebc1..3c7d661 100644
--- a/ltrace.c
+++ b/ltrace.c
@@ -5,7 +5,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include <pwd.h>
 #include <string.h>
 #include <errno.h>
 #include <sys/param.h>
@@ -37,7 +36,8 @@
 				if (!tmp) {
 					return;
 				}
-				break;
+				tmp2 = opt_p;
+				continue;
 			}
 			tmp2 = tmp2->next;
 		}
@@ -51,6 +51,10 @@
 {
 	exiting = 1;
 	debug(1, "Received interrupt signal; exiting...");
+	if (opt_o) {
+		fclose(output);
+		opt_o = 0;
+	}
 	signal(SIGINT, SIG_IGN);
 	signal(SIGTERM, SIG_IGN);
 	signal(SIGALRM, signal_alarm);
@@ -71,6 +75,9 @@
 	if (opt_c) {
 		show_summary();
 	}
+	if (opt_o) {
+		fclose(output);
+	}
 }
 
 static void guess_cols(void)
@@ -102,24 +109,24 @@
 
 	guess_cols();
 	argv = process_options(argc, argv);
-        while (opt_F) {
-	    /* If filename begins with ~, expand it to the user's home */
-	    /* directory. This does not correctly handle ~yoda, but that */
-	    /* isn't as bad as it seems because the shell will normally */
-	    /* be doing the expansion for us; only the hardcoded */
-	    /* ~/.ltrace.conf should ever use this code. */
-	    if (opt_F->filename[0] == '~') {
-		char path[PATH_MAX];
-		char *home_dir = getpwuid(geteuid())->pw_dir;
-		strncpy(path, home_dir, PATH_MAX - 1);
-		path[PATH_MAX - 1] = '\0';
-		strncat(path, opt_F->filename + 1,
-			PATH_MAX - strlen(path) - 1);
-		read_config_file(path);
-	    } else {
-		read_config_file(opt_F->filename);
-	    }
-	    opt_F = opt_F->next;
+	while (opt_F) {
+		/* If filename begins with ~, expand it to the user's home */
+		/* directory. This does not correctly handle ~yoda, but that */
+		/* isn't as bad as it seems because the shell will normally */
+		/* be doing the expansion for us; only the hardcoded */
+		/* ~/.ltrace.conf should ever use this code. */
+		if (opt_F->filename[0] == '~') {
+			char path[PATH_MAX];
+			char *home_dir = getenv("HOME");
+			strncpy(path, home_dir, PATH_MAX - 1);
+			path[PATH_MAX - 1] = '\0';
+			strncat(path, opt_F->filename + 1,
+					PATH_MAX - strlen(path) - 1);
+			read_config_file(path);
+		} else {
+			read_config_file(opt_F->filename);
+		}
+		opt_F = opt_F->next;
 	}
 	if (opt_e) {
 		struct opt_e_t *tmp = opt_e;