Given that third-party libraries (such as Boost) can and do use those names,
properly namespace-scoped, it's unpardonable to break any such innocent usage
with a macro. Given the pervasiveness of the need, introduce a header file
with the requisite #undef directives.
Identified and reacted to the priority inversion problem we
have in texturefetch. Includes the introduction of a priority_queue
for the requests that are ready. Start some parameterization in
anticipation of having policy_class everywhere. Removed _assert.h
which isn't really needed in indra codebase. Implemented async
setPriority request (which I hope I can get rid of eventually along
with all priorities in this library). Converted to using unsigned
int for priority rather than float. Implemented POST and did
groundwork for PUT.