Use Fopen almost everywhere.

Use Fopen almost everywhere.
Rip out --enable-bzip2-payload, we'll use Fopen w macros instead.
Work out ref counting for ftpControl so that control channel is persistent.
build/build.c: Use fpio to write build stage script.
parseSpec.c: Rework include stack to use FD_t, not FILE *.
tread.c: Delete, use ufdio->read instead.
rpmio.c: Filter out fdio fd == NULL assertion failures.
rpmrc.c: Don't fail if HOME is not environment.
rpmrc.c: Rework ufdio FTP rcfile I/O to be more similar to stdio.

CVS patchset: 3417
CVS date: 1999/11/04 21:26:08