Disable -Wmemset-transposed-args to ensure that FORTIFY still works
without it. Also, we can finally enable checking for
FLT_HAS_SUBNORM/DBL_HAS_SUBNORM/LDBL_HAS_SUBNORM now that those are
available in Clang.
Bug: http://b/110779387
Test: build and run bionic unit tests
Change-Id: I4bf19b870c44d981ecbd1089d0ae6a2496be5441
Well, all except <threads.h> which we have no current plans to implement.
The only thing this turned up is that clang's <float.h> doesn't define
FLT_HAS_SUBNORM/DBL_HAS_SUBNORM/LDBL_HAS_SUBNORM, so for now we assert
that those are missing so that when we get a fixed clang, we notice.
Also the <tgmath.h> is utterly perfunctory, but seems like an appropriate
amount of effort to put in.
Bug: N/A
Test: ran tests
Change-Id: I7f7a7040b3271ceda625bee8a40a9d8cef52ee44
