commit 471e1eb407fe074fbc850d17d48d7d9af913c846
author Todd Wang <toddw@google.com> Sat May 07 01:44:45 2016 -0700
committer Todd Wang <toddw@google.com> Sat May 07 01:44:45 2016 -0700
tree 583d3026664b766d47f4dd56c188bfc50ffc20a0
parent f8ece63febc3719aed063d255ec415481d33c918

More vdltest changes.

Changed vdltest to generate 1-field structs and unions again,
along with an All struct that contains all fields.  It's easier
to understand failures with the 1-field types, and the All type
covers everythng else.

Also changed vdltest to generate "X" types and entries.  These
are types that don't have the VDL{IsZero,Read,Write} methods,
which will force them to use the reflection codepath.  In order
to implement this, the vdl tool is hard-coded to disable
generation of those methods for the vdltest "X" types.

Also generate VNamedError and XNamedError types, which are
compatible with the regular WireError type.  This provides test
coverage for custom error types.

I had mis-read the timings on my last round of CLs; the time to
compile both VDL and Go was actually ~10 seconds.  With this
round of changes it's now actually ~20 seconds, due to the "X"
types and entries.

MultiPart: 1/2
Change-Id: I6fe0126afa6abc959d17d297c98c69da4a540931