fixed a bug where too long filenames would not be printed in errors

and the porgam would jsut essentially print spaced forever

include/libslime.h

@@ -149,6 +149,8 @@ namespace Slime {
         String*      message;
     };
 
+    const wchar_t* char_to_wchar(const char* c);
+    char* read_entire_file(char* filename);
     void add_to_load_path(const char*);
     bool lisp_object_equal(Lisp_Object*,Lisp_Object*);
     Lisp_Object* built_in_load(String*);
@@ -182,6 +184,9 @@ namespace Slime {
     void generate_docs(String* path);
 
     namespace Memory {
+        extern Lisp_Object* nil;
+        extern Lisp_Object* t;
+
         Environment* create_built_ins_environment();
         Lisp_Object* create_lisp_object_cfunction(bool is_special);
         Lisp_Object* get_or_create_lisp_object_keyword(const char* identifier);