Switched to internal equivalence in preparation for partials

Change-Id: If6f895f98f78e29ab3063024897b9f00ce5d4e41
Need to adjust the set min when merging.

Change-Id: I36f07bd2044030c6576f52b299b003f481f735f9
Correctly transcribes ghosts

Change-Id: I4a07322915da1acfa14b82ff1c1ce0604cb28bf4
Implemented the lightweight exchange.

Change-Id: Ifa0c1f9ee01e706a10bfdfe0b5370d3230b21825
Fixed a few null refs, etc.

Change-Id: Iad657f047db683fe379e2d72c0b8ea75c8943b31
sets_changed not numProcs.

Change-Id: I4cfca216521b4d02778985d5d0a33fa4ee56d06a
Clear only when completed.

Change-Id: I2d18f0b957bbff75af64c66636a49d593ebd3a62
Properly pass neighbors and deal with unseen regions.

Change-Id: Icb71d46a845e1fae835c6edddb7af4f74822a3ed
Working around mismatch between block index and block Id

Change-Id: I623900affd5f1226983e2b136f40259e2169b1f8
Defensive around the array limits.

Change-Id: Idf422153b211c0d62f2f6f4ca79bf660c0c3528c
Setup the timer messages.

Change-Id: If92c24fdc047dce117513bd2a89140330748b15b
Merge topic 'optimize_amrconnectivity' into next

28fd5e32 Setup the timer messages.
000436eb Defensive around the array limits.
b9d53009 Working around mismatch between block index and block Id
bc0704b7 Properly pass neighbors and deal with unseen regions.
83fdc16f Clear only when completed.
5798acce sets_changed not numProcs.
a33b1ef3 Fixed a few null refs, etc.
f72a02f5 Implemented the lightweight exchange.
a09b604d Correctly transcribes ghosts
17e98f8e Need to adjust the set min when merging.
83ebff62 Switched to internal equivalence in preparation for partials