Update.

From-SVN: r25031

libstdc++/ChangeLog

+1999-02-04  Ulrich Drepper  <drepper@cygnus.com>
+
+	* configure.in: Recognize --enable-threads=posix for all
+	platforms.
+	* config/posix.mt: New file.
+
+	* configure.in: Add fragments for Solaris defining macro specifying
+	thread library to be used.
+	* config/sol2pth.mt: New file
+	* config/sol2solth.mt: New file.
+	* stl/stl_alloc.h: Add support for Solaris thread library.
+	* stl/stl_config.h: Recognize _SOLTHREADS and define internal macros
+	appropriately.
+
 Sat Jan 30 08:05:46 1999 Mumit Khan  <khan@xraylith.wisc.edu>
 
 	* config/x86-interix.ml: New file.