[build] Use `info' function of make 3.81.
* configure, docs/INSTALL, docs/INSTALL.CROSS, docs/INSTALL.GNU,
docs/INSTALL.UNIX, docs/MAKEPP: Bump make version requirements.
* builds/detect.mk (std_setup): Replace `echo' with `info'.
(dos_setup): Removed.
* builds/unix/install.mk, builds/modules.mk, builds/dos/detect.mk,
builds/windows/detect.mk, builds/os2/detect.mk: Updated.
* builds/newline: No longer needed.
* docs/INSTALL.UNIX: simplified some parts, add reference to
autogen.sh and pointer to README.CVS
* README.CVS: add common problem description and solution
when running autogen.sh
* docs/INSTALL: add reference to MacOS X
* docs/MAKEPP, docs/INSTALL.MAC: add new documentation files
* docs/TODO: remove obsolete items