2.4.0: --minPhase causes 7dB level drop + long processing

[gee-ell]

Windows 2.4.0 binaries 96k / 64bit float input file:

ssrc.exe --rate 48000 --bits 24 --dither 98 --pdf 1 --profile insane %1 "%outfile%"

processes quickly and produces correct output.

(except output is generally too long in 2.4.0, see https://github.com/shibatch/SSRC/issues/30)

but adding --minPhase with the same input gives a crazy long processing time, and the resulting level is reduced by exactly 7db:

ssrc.exe --rate 48000 --bits 24 --dither 98 --pdf 1 --profile insane --minPhase %1 "%outfile%"