Fix 'make dist'


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1259 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/Makefile.am b/Makefile.am
index 63accbb..32f48e6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -12,7 +12,8 @@
 
 
 HDRS = jchuff.h jdct.h jdhuff.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
-	jpegint.h jpeglib.h jversion.h jsimd.h jsimddct.h jpegcomp.h
+	jpegint.h jpeglib.h jversion.h jsimd.h jsimddct.h jpegcomp.h \
+	jpeg_nbits_table.h
 
 libjpeg_la_SOURCES = $(HDRS) jcapimin.c jcapistd.c jccoefct.c jccolor.c \
 	jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \