Improved precision of channel frequencies when reading PSRFITS files
Made sure freq calculation was done as double
Merge pull request #24 from paulray/fix-psrfits-freqs

Fix psrfits frequency determinations
Changes to compile on Mac OS X with fink-installed pgplot,fftw3,...
Merge branch 'osx-fink-support' of github.com:paulray/presto into osx-fink-support

* 'osx-fink-support' of github.com:paulray/presto:
  Changes to compile on Mac OS X with fink-installed pgplot,fftw3,...
  Changes to compile on Mac OS X with fink-installed pgplot,fftw3,...
  Changes to compile on Mac OS X with fink-installed pgplot,fftw3,...
  Changes to compile on Mac OS X with fink-installed pgplot,fftw3,...