Move to tabs for indentation and to 8-space notches, per style(9).

4 space indentation with a mix of tabs and spaces is a hassle. Update
to project-standard hard-tabs with 8-space indentation in these files.
This matches the new code coming in better as well.

stand/common/interp_parse.c

@@ -50,18 +50,19 @@ static char		*args[MAXARGS];
  */
 
 #define PARSE_FAIL(expr) \
-if (expr) { \
+	if (expr) { \
 		printf("fail at line %d\n", __LINE__); \
 		clean(); \
 		free(copy); \
 		free(buf); \
 		return 1; \
-}
+	}
 
 /* Accept the usual delimiters for a variable, returning counterpart */
 static char
 isdelim(int ch)
 {
+
 	if (ch == '{')
 		return '}';
 	else if (ch == '(')
@@ -72,12 +73,14 @@ isdelim(int ch)
 static int
 isquote(int ch)
 {
+
 	return (ch == '\'');
 }
 
 static int
 isdquote(int ch)
 {
+
 	return (ch == '"');
 }
 
@@ -208,6 +211,7 @@ clean(void)
 static int
 insert(int *argcp, char *buf)
 {
+
 	if (*argcp >= MAXARGS)
 		return 1;
 	args[(*argcp)++] = strdup(buf);
@@ -217,6 +221,7 @@ insert(int *argcp, char *buf)
 static char *
 variable_lookup(char *name)
 {
+
 	/* XXX search "special variable" space first? */
 	return (char *)getenv(name);
 }