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/randperm

@@ -5,9 +5,9 @@ SYNOPSIS
     randperm(x)
 
 TYPES
-    x		list or matrix
+    x           list or matrix
 
-    return	same as x
+    return      same as x
 
 DESCRIPTION
     For a list or matrix x, randperm(x) returns a copy of x in which
@@ -22,20 +22,20 @@ EXAMPLE
     ; randperm(A)
 
     list (5 elements, 5 nonzero):
-	  [[0]] = 4
-	  [[1]] = 1
-	  [[2]] = 2
-	  [[3]] = 3
-	  [[4]] = 2
+          [[0]] = 4
+          [[1]] = 1
+          [[2]] = 2
+          [[3]] = 3
+          [[4]] = 2
 
     ; randperm(A)
 
     list (5 elements, 5 nonzero):
-	  [[0]] = 2
-	  [[1]] = 1
-	  [[2]] = 4
-	  [[3]] = 2
-	  [[4]] = 3
+          [[0]] = 2
+          [[1]] = 1
+          [[2]] = 4
+          [[3]] = 2
+          [[4]] = 3
 
 LIMITS
     none
@@ -54,7 +54,7 @@ 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
@@ -62,8 +62,8 @@ 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:	1995/07/10 02:09:31
-## File existed as early as:	1995
+## Under source code control:   1995/07/10 02:09:31
+## File existed as early as:    1995
 ##
-## 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/