some tabs to spaces

cd src
    grep -P -n '\t' *.c | grep -v "1:"
    cd ../include
    grep -P -n '\t' *.h | grep -v "1:"
    cd ..

side note: win/Qt/*.cpp are full of tabs

win/tty/getline.c

@@ -242,8 +242,8 @@ xwaitforspace(register const char *s) /* chars allowed besides return */
  * Return TRUE if we've extended the string at base.  Otherwise return FALSE.
  * Assumptions:
  *
- *	+ we don't change the characters that are already in base
- *	+ base has enough room to hold our string
+ *      + we don't change the characters that are already in base
+ *      + base has enough room to hold our string
  */
 static boolean
 ext_cmd_getlin_hook(char *base)