arm & powerpc: populate argv[0] fixups

* Fix powerpc builds, we can't pass $(LDFLAGS) to $(CC)
* Fix argv[0] name to include dir and suffix, like x86 has.
* Satisfy Drew's OCD by adding 'e' to all prognam variables,
  matching the more popular variable name (says Google) used
  by Paolo, PROGNAME.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
6 files changed