1.09

• add define R123_USE_U01_DOUBLE to u10fixedpt.h
• fix definition of const char *srcstr[] in util_opencl.h
• improve nvccfeatures.h so that 64-bit philox can be used both on the host and on the cuda device.
• add _Pragmas so R123_STATIC_ASSERT doesn't warn with clang-3.6.
• boxmuller.hpp doesn't look for sincos when APPLE is true.