Put the STATUS file back in, and updated it to the best of my ability.

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@172103 13f79535-47bb-0310-9956-ffa450edef68

STATUS

+This is the STATUS file for the Xerces for C++ code base. 
+
+There are lots of things that need to be done: 
+
+* Support for W3C XML schema.
+
+* performance, performance, performance.  Always need help here.
+
+* conformance, conformance, conformance.  We're pretty darn good, but
+  we can always do better.
+
+* a bunch of things that haven't been thought of yet.
+
+* more documentation.  The docs need to be updated, especially the FAQ.
+
+* more samples (lots, especially code fragments that accomplish specific
+  tasks)
+
+* kill bugs (always)
+
+* Major work on the build system.
+