Replace spaces with tabs and vice versa

For Star Traders, all text files use spaces only (no tabs); for C source
code files, tabs are used, except in comments, where spaces only are used.

COPYING

@@ -18,15 +18,15 @@ versions of the program, allowing others to benefit from them.
 
 --------------------------------------------------------------------------
 
-			GNU GENERAL PUBLIC LICENSE
-			 Version 3, 29 June 2007
+                        GNU GENERAL PUBLIC LICENSE
+                         Version 3, 29 June 2007
 
   Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 
        Everyone is permitted to copy and distribute verbatim copies
-	of this license document, but changing it is not allowed.
+        of this license document, but changing it is not allowed.
 
-				 Preamble
+                                 Preamble
 
 The GNU  General Public License is  a free, copyleft  license for software
 and other kinds of works.
@@ -89,7 +89,7 @@ cannot be used to render the program non-free.
 The   precise  terms   and  conditions   for  copying,   distribution  and
 modification follow.
 
-			   TERMS AND CONDITIONS
+                           TERMS AND CONDITIONS
 
    0. Definitions.
 
@@ -625,9 +625,9 @@ waiver of  all civil  liability in connection  with the Program,  unless a
 warranty or assumption  of liability accompanies a copy  of the Program in
 return for a fee.
 
-		       END OF TERMS AND CONDITIONS
+                       END OF TERMS AND CONDITIONS
 
-	      How to Apply These Terms to Your New Programs
+              How to Apply These Terms to Your New Programs
 
 If  you develop  a new  program, and  you want  it to  be of  the greatest
 possible use  to the public, the  best way to  achieve this is to  make it

configure.ac

@@ -27,7 +27,7 @@ dnl along with this program.  If not, see https://www.gnu.org/licenses/.
 
 
 AC_INIT([Star Traders], [7.13], [J.Zaitseff@zap.org.au], [trader],
-        [https://www.zap.org.au/software/trader/])
+	[https://www.zap.org.au/software/trader/])
 AC_DEFINE([PACKAGE_AUTHOR], ["John Zaitseff"], [Package author])
 
 AC_PREREQ([2.69])

src/utils.h

@@ -243,7 +243,7 @@ extern void init_locale (void);
   Parameters: buf       - Buffer to receive result
               maxsize   - Maximum size of buffer
               format    - strfmon() format to use
-	      val       - Monetary value to convert
+              val       - Monetary value to convert
   Returns:    ssize_t   - Size of returned string
 
   This function calls strfmon() to convert val to a suitable monetary