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/fscan

@@ -5,10 +5,10 @@ SYNOPSIS
    fscan(fs, x_1, x_2, ..., x_n)
 
 TYPES
-    fs			file stream open for reading
-    x_1, x_2, ...	any
+    fs                  file stream open for reading
+    x_1, x_2, ...       any
 
-    return		integer
+    return              integer
 
 DESCRIPTION
    Starting at the current position on fs and while values remain in the
@@ -25,7 +25,7 @@ EXAMPLE
     ; fputs(f, "\t3+4\t\ta-2i  d=a^2   'word'")
     ; rewind(f)
     ; fscan(f, a, b, , c)
-	4
+        4
     ; print a, b, c, d
     7 a-2i word 49
 
@@ -46,7 +46,7 @@ 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
@@ -54,8 +54,8 @@ 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/