Add extra documentation and utility file to the source tarball

These might be useful for someone starting from one of our release or
snapshot source tarballs.

Makefile.am

@@ -46,6 +46,8 @@ dist_changelogs_DATA += ChangeLogs/ChangeLog-1.0.1
 dist_changelogs_DATA += ChangeLogs/ChangeLog-1.0.0
 
 EXTRA_DIST  = .editorconfig
+EXTRA_DIST += INSTALL.linux
+EXTRA_DIST += autogen.sh
 EXTRA_DIST += po/README
 # Just in case these come in handy during development started from a
 # regular source tarball.  They are not needed otherwise as they are

tools/Makefile.am

@@ -36,6 +36,7 @@ EXTRA_DIST = check-po.awk libtool-get-dll-ext mustek600iin-off.c \
 EXTRA_DIST += style-check.sh
 EXTRA_DIST += create-changelog.sh
 EXTRA_DIST += update-upstreams.sh
+EXTRA_DIST += epson2usb.pl
 
 sane_find_scanner_SOURCES = sane-find-scanner.c
 if have_usblib