Fix 'make dist'


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@717 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/Makefile.am b/Makefile.am
index f384eab..560af9a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -130,7 +130,8 @@
 
 
 EXTRA_DIST = win release $(DOCS) $(TESTFILES) CMakeLists.txt \
-	sharedlib/CMakeLists.txt cmakescripts libjpeg.map.in doc doxygen.config
+	sharedlib/CMakeLists.txt cmakescripts libjpeg.map.in doc doxygen.config \
+	jccolext.c jdcolext.c jdmrgext.c
 
 dist-hook:
 	rm -rf `find $(distdir) -name .svn`