Completet char -> unsigned char conversion.

Renamed s-collat-tables -> s-collat-tabs.

src/libraries/libmisc/s-string.h

@@ -31,7 +31,7 @@
 
 #include <misc-types.h>
 
-#include "s-collat-tables.h"
+#include "s-collat-tabs.h"
 
 
 typedef 	long		String_size;
@@ -155,7 +155,7 @@ s_size_crea_str(String      *result,
  *  by s_crea_str(), to deallocate the memory used by it.
  */
 extern  String
-s_fcrea_str (const char	  * c_string);
+s_fcrea_str (const unsigned char  * c_string);