can be included directly in the Makefile.

* src/.dist_deps: Dependencies on environ.h.

* misc/make-am: New script, for generating the files
src/.dist_headers, src/.dist_classes and src/.dist_deps. Replaces
make_am, src/used_headers and src/cvs_headers.

Rev: src/.dist_classes:1.7
Rev: src/.dist_deps:1.1
Rev: src/.dist_headers:1.4