Log Message:
Update to 1.8.7, set LICENSE.

Changes in 1.8.7 (since 1.8.6)

* Bugs fixed

** Fix compilation with `--disable-deprecated'
** Fix %fast-slot-ref/set!, to avoid possible segmentation fault
** Fix MinGW build problem caused by HAVE_STRUCT_TIMESPEC confusion
** Fix build problem when scm_t_timespec is different from struct timespec
** Fix build when compiled with -Wundef -Werror
** More build fixes for `alphaev56-dec-osf5.1b' (Tru64)
** Build fixes for `powerpc-ibm-aix5.3.0.0' (AIX 5.3)
** With GCC, always compile with `-mieee' on `alpha*' and `sh*'
** Better diagnose broken `(strftime "%z" ...)' in `time.test' (bug #24130)
** Fix parsing of SRFI-88/postfix keywords longer than 128 characters
** Fix reading of complex numbers where both parts are inexact decimals

** Allow @ macro to work with (ice-9 syncase)

Previously, use of the @ macro in a module whose code is being
transformed by (ice-9 syncase) would cause an "Invalid syntax" error.
Now it works as you would expect (giving the value of the specified
module binding).

** Have `scm_take_locale_symbol ()' return an interned symbol (bug #25865)
** Fix potential deadlocks when running on multiple threads

** Fix problems building with the i586-mingw32msvc cross-compiler

It's now possible to build Guile for Windows by using the
i586-mingw32msvc cross-compiler on GNU/Linux.  This kind of build
produces DLLs and a main program that can be copied to and used on a
Windows PC.  For how to do this, see the `Cross building Guile'
section in `README'.