Use python instead of shell printf with \x for test-simplemerge-cmd

Needed e.g. to be compatible with Solaris.

tests/test-simplemerge-cmd

@@ -1,61 +1,61
 #!/bin/sh
 
 cp "$TESTDIR"/../contrib/simplemerge .
 
 echo base > base
 
 echo local > local
 cat base >> local
 cp local orig
 
 cat base > other
 echo other >> other
 
 echo '% changing local directly'
 python simplemerge local base other && echo "merge succeeded"
 cat local
 cp orig local
 
 echo '% printing to stdout'
 python simplemerge -p local base other
 echo ' local:'
 cat local
 
 echo '% conflicts'
 cp base conflict-local
 cp other conflict-other
 echo not other >> conflict-local
 echo end >> conflict-local
 echo end >> conflict-other
 python simplemerge -p conflict-local base conflict-other || echo "merge failed"
 
 echo '% --no-minimal'
 python simplemerge -p --no-minimal conflict-local base conflict-other
 
 echo '% 1 label'
 python simplemerge -p -L foo conflict-local base conflict-other
 
 echo '% 2 labels'
 python simplemerge -p -L foo -L bar conflict-local base conflict-other
 
 echo '% too many labels'
 python simplemerge -p -L foo -L bar -L baz conflict-local base conflict-other
 
 echo '% binary file'
-printf '\x00' > binary-local
+python -c "f = file('binary-local', 'w'); f.write('\x00'); f.close()"
 cat orig >> binary-local
 python simplemerge -p binary-local base other
 
 echo '% binary file --text'
 python simplemerge -a -p binary-local base other
 
 echo '% help'
 python simplemerge --help
 
 echo '% wrong number of arguments'
 python simplemerge
 
 echo '% bad option'
 python simplemerge --foo -p local base other
 
 exit 0