#10 hufo-smoke won't build with Sun C++ compiler

[Alan Coopersmith]

The Sun C++ compiler reports errors building hufo-smoke:

"FirePart.h", line 125: Error: Overloading ambiguity between "std::pow(double, double)" and "std::pow(float, float)".
"FirePart.h", line 165: Error: Overloading ambiguity between "std::pow(double, double)" and "std::pow(float, float)".

Defining the FIREDA constant as a float instead of a double resolves
this by making both arguments to the function be float, instead of one float
and one double. The patch from the OpenSolaris package to do this is
attached.

[Alan Coopersmith]

Patch to oglc_src/FirePart.h