Building: Add modules with DEPENDs to GENERATEd files

Building: Add modules with DEPENDs to GENERATEd files

For files GENERATEd from templates (.in files), any perl module (.pm
file) that the file depends on will automatically be used.

This means that these two lines:

    GENERATE[foo]=foo.in
    DEPEND[foo]=whatever.pm

will emit this command in a Makefile (or corresponding):

    foo: foo.in whatever.pm configdata.pm
    $(PERL) -I. -Ipathto -Mwhatever -Mconfigdata $(SRCDIR)/util/dofile.pl \\
        foo.in > foo

Note that configdata.pm is automatically added, since util/dofile.pl
itself depends on it.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10162)