goertzel.h : Remove the default constructor for fft::goertzel.

The default constructor does not properly initialize the class
variables. This leads to the possibilty of undefined behavior if
the class is used carelessly. Instead force the user to do the right
thing at compile time.

The patch also fixes the in-tree user of this class.

Signed-off-by: Philip Balister <philip@opensdr.com>
cmake: fix to allow reconfiguring install prefix
uhd: fix GRC wrapper generation to match UHD change (fixes #562)

From: Timo Juhani Lindfors <timo.lindfors@iki.fi>
Date: Tue, 9 Jul 2013 09:23:06 +0300
Subject: [PATCH] uhd: "scalar" stream arg is now called "peak"

uhd commit d46c176af34b728fd43b3dd46485b38623a7335e (dsp rework: tx
trailer, scaling work (peak)) renamed "scalar" stream arg to "peak"
and changed its semantics. Using 1/256=.003906 captures upper 8-bits.