Include README_DEVELOPERS for the GDB server in the tarball.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12217 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/Makefile.am b/coregrind/Makefile.am
index 29fa297..6220f79 100644
--- a/coregrind/Makefile.am
+++ b/coregrind/Makefile.am
@@ -23,7 +23,8 @@
 
 EXTRA_DIST = \
 	m_debuginfo/UNUSED_STABS.txt \
-	m_debuginfo/README.txt
+	m_debuginfo/README.txt \
+	m_gdbserver/README_DEVELOPERS
 
 #----------------------------------------------------------------------------
 # The launcher.  Built for the primary target only.