Cleanup: replace %-formatting with str.format in tools/ & release/

tools/utils/blender_theme_as_c.py

@@ -59,7 +59,7 @@ def repr_f32(f):
         f_test = round(f, i)
         f_test_round = round_float_32(f_test)
         if f_test_round == f_round:
-            return "%.*f" % (i, f_test)
+            return "{:.{:d}f}".format(f_test, i)
     return f_str
 
 

tools/utils/gdb_struct_repr_c99.py

@@ -46,7 +46,7 @@ class PrintStructC99(gdb.Command):
             print(' ' * hs + '.' + rr_s[0] + '= ' + rr_rval)
 
 
-print('Running GDB from: %s\n' % (gdb.PYTHONDIR))
+print('Running GDB from: {:s}\n'.format(gdb.PYTHONDIR))
 gdb.execute("set print pretty")
 gdb.execute('set pagination off')
 gdb.execute('set print repeats 0')