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/catalan

@@ -5,14 +5,14 @@ SYNOPSIS
     catalan(n)
 
 TYPES
-    n		integer
+    n           integer
 
-    return	integer
+    return      integer
 
 DESCRIPTION
     If n >= 0, this returns the Catalan number for index n:
 
-	catalan(n) = comb(2*n,n)/(n + 1)
+        catalan(n) = comb(2*n,n)/(n + 1)
 
     Zero is returned for negative n.
 
@@ -45,7 +45,7 @@ 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
@@ -53,7 +53,7 @@ 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:	2000/12/14 01:33:00
-## File existed as early as:	2000
+## Under source code control:   2000/12/14 01:33:00
+## File existed as early as:    2000
 ##
-## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
+## Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/