Fix 'make dist'


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@799 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/Makefile.am b/Makefile.am
index 8d8bc3a..b21acc2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -124,11 +124,11 @@
 	rdrle.c wrrle.c BUILDING.txt ChangeLog.txt
 
 docdir = $(datadir)/doc
-doc_DATA = README README-turbo.txt libjpeg.txt structure.txt usage.txt \
+dist_doc_DATA = README README-turbo.txt libjpeg.txt structure.txt usage.txt \
 	wizard.txt 
 
 exampledir = $(datadir)/doc
-example_DATA = example.c
+dist_example_DATA = example.c
 
 
 EXTRA_DIST = win release $(DOCS) testimages CMakeLists.txt \