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/time

@@ -5,13 +5,13 @@ SYNOPSIS
     time()
 
 TYPES
-    return	int
+    return      int
 
 DESCRIPTION
     The time() builtin returns the number of seconds since the Epoch,
     which according to POSIX is:
 
-	Thr Jan	 1 00:00:00 UTC 1970
+        Thr Jan  1 00:00:00 UTC 1970
 
 EXAMPLE
     ; print time();
@@ -34,7 +34,7 @@ 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
@@ -42,8 +42,8 @@ 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:	1996/05/01 16:57:20
-## File existed as early as:	1996
+## Under source code control:   1996/05/01 16:57:20
+## File existed as early as:    1996
 ##
-## 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/