hipMalloc and hipHostMalloc are C++ function templates by default. In some
applications they need to discover the decltype of underlying C functions. In
this commit, a new macro __HIP_DISABLE_CPP_FUNCTIONS__ is introduced to
suppress the C++ function templates.
Existing HIP applications don't need to be changed. hipMalloc and hipHostMalloc
will behave just the same.
For new applications which depends on identifying decltypes of underlying C
functions, __HIP_DISABLE_CPP_FUNCTIONS__ shall be defined prior to including
HIP headers.
Wen-Heng (Jack) Chung
f4e1f74e9e