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/fgetstr

@@ -5,9 +5,9 @@ SYNOPSIS
     fgetstr(fs)
 
 TYPES
-    fs		file stream open for reading
+    fs          file stream open for reading
 
-    return	string, null or error value
+    return      string, null or error value
 
 DESCRIPTION
     If the stream is at end of file, the null value is returned.
@@ -29,12 +29,12 @@ EXAMPLE
     ; fputstr(f, "  Alpha    Beta ", "", "Gamma\n\tDelta")
     ; freopen(f, "r")
     ; fgetstr(f)
-	"  Alpha    Beta "
+        "  Alpha    Beta "
     ; fgetstr(f)
-	""
+        ""
     ; fgetstr(f)
-	"Gamma
-	Delta"
+        "Gamma
+        Delta"
     ; fgetstr(f)
 
 LIMITS
@@ -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:	1996/04/30 03:05:17
-## File existed as early as:	1996
+## Under source code control:   1996/04/30 03:05:17
+## 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/