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/errmax

@@ -5,9 +5,9 @@ SYNOPSIS
     errmax([num])
 
 TYPES
-    num		integer
+    num         integer
 
-    return	integer
+    return      integer
 
 DESCRIPTION
     Without an argument, errmax() returns the current value of an
@@ -20,9 +20,9 @@ DESCRIPTION
 
 EXAMPLE
     ; errmax(2)
-	20
+        20
     ; errcount()
-	0
+        0
     ; a = 1/0; b = 2 + ""; c = error(27); d = newerror("alpha");
     Error 27 caused errcount to exceed errmax
 
@@ -33,7 +33,7 @@ EXAMPLE
     0 0
 
     ; errmax(-1)
-	2
+        2
 
 LIMITS
     -1 <= num <= 2147483647
@@ -52,7 +52,7 @@ 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
@@ -60,8 +60,8 @@ 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:	1997/03/08 08:51:14
-## File existed as early as:	1997
+## Under source code control:   1997/03/08 08:51:14
+## 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/