[Patch-gnuradio] A few patches to help building on Windows MSVC

[Eugene Grayver]

Hello,

I am using gnuradio under MSVC with
a few hacks to make it run under C++ alone.  I ran into a few minor
'bugs' that prevent me from building using MSVC or Intel C++ compiler.
 Could somebody with an SVN account put these changes in:

gr_firdes.cc:344
Argument to 'log' should be in
floating point format.

double s = 1.0/(sqrt(log(2)) / (2*M_PI*bt));

double s = 1.0/(sqrt(log(2.0)) / (2*M_PI*bt));

gr_fxpt.h:42
Data member initialization is not
allowed by Intel C++ compiler.  There's something there already for
the GCC 4.x bug.

static const float PI = 3.14159265358979323846; static const float TWO_TO_THE_31 = 2147483648.0;

static const float PI; static const float TWO_TO_THE_31;

gr_fxpt.cc: 36

const float gr_fxpt::TWO_TO_THE_31; const float gr_fxpt::PI;

const float gr_fxpt::TWO_TO_THE_31 = 2147483648.0; const float gr_fxpt::PI = 3.14159265358979323846;

Thanks.