* prebuilt/i686-pc-linux-gnu/Makefile.am:
* prebuilt/mips-unknown-linux-gnu/Makefile.am:
* prebuilt/x86_64-unknown-linux-gnu/Makefile.am: Only prebuild eval.go,
psyntax-pp.go, and boot-9.go. The builder can handle the rest.
Otherwise the tarball size would explode, given the expansion in
bootstrap.am.
* am/bootstrap.am: New file, factored out of bootstrap/Makefile.am.
* bootstrap/Makefile.am: Use bootstrap.am.
* prebuilt/Makefile.am:
* prebuilt/i686-pc-linux-gnu/Makefile.am:
* prebuilt/mips-unknown-linux-gnu/Makefile.am:
* prebuilt/x86_64-unknown-linux-gnu/Makefile.am: New files.
* configure.ac: Output the prebuilt/ makefiles.
* Makefile.am: Descend into prebuilt/ when making dist.
* meta/uninstalled-env.in: Arrange to put prebuilt/ in the beginning of
the GUILE_LOAD_COMPILED_PATH. Also fix a case where bootstrap/ wasn't
being correctly added to the load path.