Reformated source files with indent

* Remove hard tabs and reformat the sources to the Kernighan & Ritchie
  style. It is used throughout their well-known book
  The C Programming Language.

  Used command line:
  $ indent -kr -nut <file>.c

error.c

@@ -21,34 +21,33 @@
 
 void error(int level, char *msg, ...)
 {
-	va_list arguments;
-	int debug = 1;
-	va_start(arguments, msg);
+    va_list arguments;
+    int debug = 1;
+    va_start(arguments, msg);
 
-	switch (level)
-	{
-		case ERR_DEBUG:
-			if (debug != 0)
-				fprintf(stderr, "DEBUG: ");
-			break;
-		case ERR_NOTICE:
-			fprintf(stderr, "NOTICE: ");
-			break;
-		case ERR_WARNING:
-			fprintf(stderr, "WARNING: ");
-			break;
-		case ERR_ERROR:
-			fprintf(stderr, "ERROR: ");
-			break;
-		case ERR_FATAL:
-			fprintf(stderr, "FATAL: ");
-			break;
-	}
-	/* print the remaining arguments */
-	vfprintf(stderr, msg, arguments);
-	va_end(arguments);
-	fprintf(stderr, "\n");
-	if (level == ERR_FATAL)
-	exit(1);
+    switch (level) {
+    case ERR_DEBUG:
+        if (debug != 0)
+            fprintf(stderr, "DEBUG: ");
+        break;
+    case ERR_NOTICE:
+        fprintf(stderr, "NOTICE: ");
+        break;
+    case ERR_WARNING:
+        fprintf(stderr, "WARNING: ");
+        break;
+    case ERR_ERROR:
+        fprintf(stderr, "ERROR: ");
+        break;
+    case ERR_FATAL:
+        fprintf(stderr, "FATAL: ");
+        break;
+    }
+    /* print the remaining arguments */
+    vfprintf(stderr, msg, arguments);
+    va_end(arguments);
+    fprintf(stderr, "\n");
+    if (level == ERR_FATAL)
+        exit(1);
 }
 #endif