non-official updated version of glpk (4.62 pre-release)

Please see an updated version of glpk here:
http://sourceforge.net/projects/noumenon/files/tmp/
(Note that this is *not* an official release.)

The following main changes were made:

1. glp_config was added to the export section (for MS Windows).

2. Calls to non-thread-safe functions gmtime, strerror, and strtok were
   replaced by calls to corresponding thread-safe equivalents (gmtime_r,
   strerror_r, and strtok_r for GNU/Linux).

If the application calls glpk routines from multiple threads, the 
following should be taken into account:

1) a thread should not access glpk program objects (e.g. glp_proc)
   created by other threads;

2) to prevent memory leaks each thread before termination should call 
   the glpk api routine glp_free_env.


Andrew Makhorin