Here the final patch with also the option to see the process when in debug mode, I had forgot to remove them in the previous
-------------------------------------------------------------------------

Index: constraints_parser.c
===================================================================
--- constraints_parser.c	(revision 4)
+++ constraints_parser.c	(working copy)
@@ -657,6 +657,7 @@
 	struct stat st;
 	char src[256];
 
+
 	char buffer[16*1024];
         setvbuf(stdout, buffer, _IOFBF, sizeof(buffer));
 
@@ -727,11 +728,16 @@
 		char src_file[256];
 		struct dirent *de;
 		src_dir = opendir(src);
+		int file_count = 0;
+
+
+/*
 		while(NULL != (de = readdir(src_dir))){
 			if(!strncmp(de->d_name, ".", sizeof(de->d_name))) continue;
 			if(!strncmp(de->d_name, "..", sizeof(de->d_name))) continue;
             snprintf(src_file, sizeof(src_file), "%s/%s", src, de->d_name);
 			if(debug) { fprintf(stderr, "Processing %s\n", src_file); }
+			fprintf(stderr, "Processing %s\n", src_file);
 			if(0 == (fn = open_ibfile(src_file))){
 				fprintf(stderr, "Can't open %s\n", src_file);
 				perror("open_ibfile");
@@ -740,7 +746,82 @@
 			process_ibfile(fn);
 			close(fn);
 			}
+*/
+/*The pages are NOT read from the readdir function in sorted order
+ * To have them sorted we have to process them first
+ *
+ * Below we first identify the number of files to parse
+ *
+ * then we create an array with all the names and we sort it
+ *
+ * Then we process it.
+ *
+ * Process can be optimize, but at least is not presenting the pages in sparse order in the result file.
+ *
+ * Use debug option to enable the progress view
+ */
+
+/*
+ * Start Patch \/
+ */
+		while(NULL != (de = readdir(src_dir))){
+			if(!strncmp(de->d_name, ".", sizeof(de->d_name))) continue;
+			if(!strncmp(de->d_name, "..", sizeof(de->d_name))) continue;
+			file_count++;
+
+		}
+
+		char result[file_count][255];
+		int indexres = 0;
+
+		src_dir = opendir(src);
+		while(NULL != (de = readdir(src_dir))){
+			if(!strncmp(de->d_name, ".", sizeof(de->d_name))) continue;
+			if(!strncmp(de->d_name, "..", sizeof(de->d_name))) continue;
+            snprintf(src_file, sizeof(src_file), "%s/%s", src, de->d_name);
+
+            strcpy(result[indexres++], src_file) ;
+			if(debug){ fprintf(stderr, "Processing %s\n", src_file); }
+		}
+
 		closedir(src_dir);
+
+		int i,j;
+		char t[file_count];
+
+		for(i=1;i<file_count;i++){
+		    for(j=1;j<file_count;j++)
+		        {
+		    	//fprintf(stderr, "value  %d\n", strcmp(result[j-1],result[j])>0);
+		        if(strcmp(result[j-1],result[j])>0)
+		            {
+		            strcpy(t,result[j-1]);
+		            strcpy(result[j-1],result[j]);
+		            strcpy(result[j],t);
+		            }
+		        }
+		    }
+
+
+			indexres = 0;
+			if(debug){fprintf(stderr, "Processing, \nTotal pages to process %d %s",file_count, ":");}
+			while(indexres<file_count){
+				if(debug){fprintf(stderr, "%s", ".");}
+				if(0 == (fn = open_ibfile(result[indexres]))){
+					fprintf(stderr, "Can't open %s\n", result[indexres]);
+					perror("open_ibfile");
+					exit(-1);
+					}
+				process_ibfile(fn);
+				indexres++;
+				close(fn);
+			 }
+			if(debug){fprintf(stderr, "%s\n", "END Processing\n");}
+/*
+ * END Patch /\
+ */
+
+
 		}
 	else{
 		if(0 == (fn = open_ibfile(src))){
@@ -751,6 +832,7 @@
 		process_ibfile(fn);
 		close(fn);
 		}
+
 	table_def_t *table = &(table_definitions[0]);
 	fprintf(stderr, "SET FOREIGN_KEY_CHECKS=0;\n");
 	fprintf(stderr, "LOAD DATA INFILE '");