Log Message:
Update to 0.6.4.

Changes:

0.6.4 (13 March 2004)

        * Time functions.
        * Use "__declspec(thread)" to mark thread-specific variables.
        * Signal handling functions.
        * Move the pthread routines out of libc into a separate library.
        * Implement the rest of libpthread.
        * Group file functions (e.g. "getgrent").
        * Clean up the mmap-related stubs.
        * Implement strerror, strsignal, perror, and psignal.
        * Number conversion routines like atoi, strtod, etc.
        * Remove "__module" and "__csharp__" as they are \ 
deprecated.
        * Use the new-style syntax for accessing the C# library.
        * Add <assembly/foo.h> files for importing C# assemblies.
        * Add <csharp.h> to provide handy definitions for C# interoperation.
        * Remove support for memory models as they are no longer required.
        * Stub out some of the locale routines.
        * Add pnetc.spec.in (Russell Stuart).
        * Detect "ilranlib" correctly in "configure.in"