Add notes/warnings about Java.

This commit was SVN r27778.

README

@@ -1081,6 +1081,17 @@ MPI FUNCTIONALITY
   Note that disabling building the C++ bindings does *not* disable all
   C++ checks during configure.
 
+--enable-mpi-java
+  Enable building of an EXPERIMENTAL Java MPI interface (disabled by
+  default).  You may also need to specify --with-jdk-dir,
+  --with-jdk-bindir, and/or --with-jdk-headers.  See README.JAVA.txt
+  for details.
+
+  Note that this Java interface is INCOMPLETE (meaning: it does not
+  support all MPI functionality) and LIKELY TO CHANGE.  The Open MPI
+  developers would very much like to hear your feedback about this
+  interface.  See README.JAVA.txt for more details.
+
 --disable-mpi-fortran
   Disable building the Fortran MPI bindings.
 

README.JAVA.txt

@@ -3,11 +3,15 @@ Feb 10, 2012
 ***************************************************************************
 IMPORTANT NOTE
 
-JAVA BINDINGS ARE PROVIDED ON A "PROVISIONAL" BASIS - I.E., THEY ARE NOT
-PART OF THE CURRENT OR PROPOSED MPI-3 STANDARDS. THUS, INCLUSION OF
-JAVA SUPPORT IS NOT REQUIRED BY THE STANDARD. CONTINUED INCLUSION
-OF THE JAVA BINDINGS IS CONTINGENT UPON ACTIVE USER INTEREST AND
-CONTINUED DEVELOPER SUPPORT
+JAVA BINDINGS ARE PROVIDED ON A "PROVISIONAL" BASIS - I.E., THEY ARE
+NOT PART OF THE CURRENT OR PROPOSED MPI STANDARDS. THUS, INCLUSION OF
+JAVA SUPPORT IS NOT REQUIRED BY THE STANDARD. CONTINUED INCLUSION OF
+THE JAVA BINDINGS IS CONTINGENT UPON ACTIVE USER INTEREST AND
+CONTINUED DEVELOPER SUPPORT.
+
+THIS SPECIFIC JAVA INTERFACE IS EXPERIMENTAL, INCOMPLETE, AND SUBJECT
+TO CHANGE!
+
 ***************************************************************************
 
 This version of Open MPI provides support for Java-based