Fix FTBFS caused by invalid cast. This resolves issue #38.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

kpat/freecell-solver/cmd_line.c

@@ -518,7 +518,7 @@ int freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
             {
                 int a;
                 const char * start_num;
-                char * end_num;
+                const char * end_num;
                 char * num_copy;
                 start_num = argv[arg];
                 for(a=0;a<5;a++)
@@ -642,7 +642,7 @@ int freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
                 *last_arg = arg-1;
                 return FCS_CMD_LINE_PARAM_WITH_NO_ARG;
             }
-            freecell_solver_user_set_soft_thread_name(instance, argv[arg]);
+            freecell_solver_user_set_soft_thread_name(instance, (char*)argv[arg]);
         }
         else if ((!strcmp(argv[arg], "--prelude")))
         {
@@ -652,7 +652,7 @@ int freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
                 *last_arg = arg-1;
                 return FCS_CMD_LINE_PARAM_WITH_NO_ARG;
             }
-            freecell_solver_user_set_hard_thread_prelude(instance, argv[arg]);
+            freecell_solver_user_set_hard_thread_prelude(instance, (char*)argv[arg]);
         }
         else if ((!strcmp(argv[arg], "-opt-to")) || (!strcmp(argv[arg], "--optimization-tests-order")))
         {
@@ -746,7 +746,8 @@ int freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
             else
             {
                 int num_to_skip = 0;
-                char * s, * buffer;
+                const char * s;
+                char * buffer;
                 FILE * f;
                 long file_len;
                 int ret;
@@ -842,7 +843,7 @@ int freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
                     ret = freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
                         instance,
                         args_man->argc - num_to_skip,
-                        args_man->argv + num_to_skip,
+                        (const char **)(args_man->argv + num_to_skip),
                         0,
                         known_parameters,
                         callback,
@@ -879,7 +880,7 @@ int freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
                 args_man_t * preset_args = 0;
                 char * dir = NULL;
 
-                status = read_preset(argv[arg], &preset_args, &dir, NULL);
+                status = read_preset((char*)argv[arg], &preset_args, &dir, NULL);
                 if (status != 0)
                 {
                     char * err_str;
@@ -896,7 +897,7 @@ int freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
                     ret = freecell_solver_user_cmd_line_parse_args_with_file_nesting_count(
                         instance,
                         preset_args->argc,
-                        preset_args->argv,
+                        (const char**)preset_args->argv,
                         0,
                         known_parameters,
                         callback,

kpat/freecell-solver/fcs_cl.h

@@ -12,7 +12,7 @@ typedef int (*freecell_solver_user_cmd_line_known_commands_callback_t)
     (
      void * instance,
      int argc,
-     char * argv[],
+     const char * argv[],
      int arg_index,
      int * num_to_skip,
      int * ret,