The "share" directory holds platform-independent files, while
"lib" holds platform-specific files.
In principle, the "collects" directory belongs in "share",
as does "doc". Those directories are put into "share"
by a Unix-style install, but left at top level for an
in-place install.
Packages in installation scope are put in "share" instead
of "lib", and the top-level Makefile puts development links
in "share/devel-pkgs".
The `configure' script now supports `--docdir' and `--collectsdir'.
Changed the version to 5.90.0.1.
