[D-runtime] core.demangle: What to do if real.sizeof == double.sizeof

[Johannes Pfau]

For ARM, real and double are the same types (long double == double in 
c). Because of that bionic (android's C library) doesn't provide a 
strtold function.

strtold is used in core.demangle in the parseReal function. Is it safe 
to just replace strtold with strtod for Android?

-- 
Johannes Pfau