Add '-n' to 'help2man' for documentation and manpage.
# manual pages if the sources for the build-tree files we want to
# run have changed.
$(libtool_1): $(ltmain_sh)
- $(AM_V_GEN)$(update_mans) --help-option=--help-all libtool
+ $(AM_V_GEN)$(update_mans) -n 'Provide generalized library-building support services' --help-option=--help-all libtool
$(libtoolize_1): $(libtoolize_in)
- $(AM_V_GEN)$(update_mans) libtoolize
+ $(AM_V_GEN)$(update_mans) -n 'Prepare a package to use libtool' libtoolize
+
## ------------- ##