Replaced #include "assert.h" with #include <cassert>

Note both the change from "" to <> and from the C to
the C++ header name.

Change-Id: I2c547e12b34b7a2dfc99e2b00af56d85e5c63104
Replaced #include <assert.h> with #include <cassert>

In other words, changed from the C to the C++ header name.
Did this only in .cxx files, and not in ThirdParty.

Change-Id: I81e2b2c7f2db00e98b37d507232fbc84022e8d8f
Replaced #include <assert.h> with #include <cassert>

In other words, changed from the C to the C++ header name.
Did this only in .h files that are C++.  Omitted ThirdParty.

Change-Id: Iba28d1711befbb7877aa48dffd23522e58c57915
Merge topic 'assert-cleanup' into master

80cf633c Replaced #include <assert.h> with #include <cassert>
425da911 Replaced #include <assert.h> with #include <cassert>
879e9ce9 Replaced #include "assert.h" with #include <cassert>