convert ASCII TABs to ASCII SPACEs

Converted all ASCII tabs to ASCII spaces using a 8 character
tab stop, for all files, except for all Makefiles (plus rpm.mk).
The `git diff -w` reports no changes.

help/arrow

@@ -1,14 +1,14 @@
 SYMBOL and NAME
-    ->	- arrow operator
+    ->  - arrow operator
 
 SYNOPSIS
     p -> X
 
 TYPES
-    p		pointer to an lvalue
-    X		identifier
+    p           pointer to an lvalue
+    X           identifier
 
-    return	lvalue
+    return      lvalue
 
 DESCRIPTION
     p->X returns the same as (*p).X.  Thus the current value of *p is
@@ -28,17 +28,17 @@ EXAMPLE
     ; p = &A
     ; p->one = 1; p->two = 2
     ; A
-	obj pair {1, 2}
+        obj pair {1, 2}
 
     ; A->two = &B
     ; p->one = 3; p->two = 4
 
     ; *p
-	    obj pair {3, 4}
+            obj pair {3, 4}
 
     ; B = {5,6}
     ; *p->two
-	    4
+            4
 
 LIMITS
     none
@@ -57,7 +57,7 @@ SEE ALSO
 ##
 ## Calc is distributed in the hope that it will be useful, but WITHOUT
 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
+## or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General
 ## Public License for more details.
 ##
 ## A copy of version 2.1 of the GNU Lesser General Public License is
@@ -65,8 +65,8 @@ SEE ALSO
 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
 ## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ##
-## Under source code control:	1997/09/06 20:03:34
-## File existed as early as:	1997
+## Under source code control:   1997/09/06 20:03:34
+## File existed as early as:    1997
 ##
-## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
-## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
+## chongo <was here> /\oo/\     http://www.isthe.com/chongo/
+## Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/