Version 0.55
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* Library and include files have been renamed as libfbmath.a and fbmath.bi
  to avoid confusion with the CRT math library.

* Added subroutine EigenSym to compute the eigenvalues and eigenvectors
  of a positive semi-definite symmetric matrix by singular value decomposition.

* Added subroutine ConvTrap to compute the convolution product of two
  functions by the trapezoidal rule.

* The library now always uses the built-in random number generator
  (`Mersenne Twister'). The other generators (MWC and UVAG) are
  presented as demo programs.
