Add date to news

* NEWS
Add some tests

* test/Makefile.am: split test environment variables, add test
  harness for compiled tests
* src/Makefile.am: remove strict visiblity so we can do binary tests
* test/check_type.c: new compiled test
configure script need AM_PROG_AR for linking

* configure.ac: add AM_PROG_AR
Missing declaration for cl_easy_setopt

* src/func.h: add declaration
Missing libguile include for type.h

* src/type.h: include libguile.h
string list conversion is incorrect

* src/type.c (_scm_convert_to_slist): fix missing brackets
Add check for not freeing already freed handle

* src/type.c (gc_free_handle): don't free NULL handle
Oops, don't check in generated file test/setopt.scm

* test/setopt.scm: removed