* automake.in (&define_files_variable): New.

* automake.in (&define_files_variable): New.
(&handle_texinfo_helper): Move the handling of user variables from
here, to...
(&handle_texinfo): here.
This is to balance the size of these functions, and to match the
convention of other _helper functions.
(&handle_texinfo_helper): Use &define_files_variable.
Move some code to use less variables.
Rename $info_cursor as $texi.
(&handle_texinfo): Do not call handle_texinfo_helper if there are
no TEXINFOS.
* lib/am/texinfos.am: Sort the occurrences of dvi, info, pdf, ps
and html.
Remove *-recursive targets from .PHONY, they are part of
$(RECURSIVE_TARGETS) anyway.
(install-info, mostlyclean-aminfo): Are .PHONY.