Without this, the manual pages can't actually be regenerated from a dist
tarball, and running make clean will remove all traces of them.
Closes: #486
Approved by: cgwalters
man1_MANS = $(addprefix man/,$(man1_files))
man5_MANS = $(addprefix man/,$(man5_files))
-EXTRA_DIST += $(man1_MANS) $(man5_MANS)
+EXTRA_DIST += $(man1_MANS) $(man5_MANS) $(man1_MANS:=.xml) $(man5_MANS:=.xml)
XSLT_STYLESHEET = http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl