Distribute man pages in source tarball


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@203 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/Makefile.am b/Makefile.am
index 7a6c538..e4c9d9a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -79,7 +79,7 @@
 wrjpgcom_LDADD = libjpeg.la
 
 
-man1_MANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
+dist_man1_MANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
 
 DOCS= README install.doc usage.doc wizard.doc example.c libjpeg.doc \
 	structure.doc coderules.doc filelist.doc jconfig.doc change.log \