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/scanf

@@ -5,10 +5,10 @@ SYNOPSIS
     scanf(fmt, x_1, x_2, ...)
 
 TYPES
-    fmt			string
-    x_1, x_2, ...	lvalues
+    fmt                 string
+    x_1, x_2, ...       lvalues
 
-    return	null, nonnegative integer, or error value
+    return      null, nonnegative integer, or error value
 
 DESCRIPTION
     This does the same as fscanf(files(0), fmt, x_1, x_2, ...).
@@ -17,9 +17,9 @@ DESCRIPTION
 EXAMPLE
     ; global a, b, c
     ; scanf("%5c", a)
-	1
+        1
     ; a
-	"Alpha"
+        "Alpha"
 
 LIMITS
     The number of arguments is not to exceed 1024.
@@ -38,7 +38,7 @@ 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
@@ -46,8 +46,8 @@ 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:	1996/04/30 03:05:18
-## File existed as early as:	1996
+## Under source code control:   1996/04/30 03:05:18
+## 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/