Switch from boost pointers to std C++11 pointers

Most of this code is automated code changes:

```
set -e
SUB="s/dummy/dummy/"
for i in shared_ptr make_shared dynamic_pointer_cast weak_ptr enable_shared_from_this get_deleter; do
  SUB="$SUB;s/boost::$i/std::$i/g"
done
SUB="$SUB;s^#include <boost/shared_ptr.hpp>^#include <memory>^g"
SUB="$SUB;s^namespace boost^namespace std^g"

find . \( -name "*.cc" -o -name "*.h" -o -name "*.i" -o -name "*.cxx" -o -name "*.py" \) -print0 | xargs -0 sed -i "$SUB"
```

Only one manual change. In `./gr-fec/lib/fec_mtrx_impl.cc`, add
`#include <algorithm>`.

4 files changed, 4 insertions, 4 deletions

diff --git a/gr-fft/include/gnuradio/fft/ctrlport_probe_psd.h b/gr-fft/include/gnuradio/fft/ctrlport_probe_psd.h
index 9f041a3a9..623804691 100644
--- a/gr-fft/include/gnuradio/fft/ctrlport_probe_psd.h
+++ b/gr-fft/include/gnuradio/fft/ctrlport_probe_psd.h
@@ -31,7 +31,7 @@ namespace fft {
 class FFT_API ctrlport_probe_psd : virtual public gr::sync_block
 {
 public:
-    typedef boost::shared_ptr<ctrlport_probe_psd> sptr;
+    typedef std::shared_ptr<ctrlport_probe_psd> sptr;
 
     /*!
      * \brief Make a ControlPort probe block.
diff --git a/gr-fft/include/gnuradio/fft/fft_vcc.h b/gr-fft/include/gnuradio/fft/fft_vcc.h
index eb2ac2f81..95d1f1855 100644
--- a/gr-fft/include/gnuradio/fft/fft_vcc.h
+++ b/gr-fft/include/gnuradio/fft/fft_vcc.h
@@ -48,7 +48,7 @@ class FFT_API fft_vcc : virtual public sync_block
 {
 public:
     // gr::fft::fft_vcc::sptr
-    typedef boost::shared_ptr<fft_vcc> sptr;
+    typedef std::shared_ptr<fft_vcc> sptr;
     /*! \brief
      * \param[in] fft_size N.
      * \param[in] forward True performs FFT, False performs IFFT.
diff --git a/gr-fft/include/gnuradio/fft/fft_vfc.h b/gr-fft/include/gnuradio/fft/fft_vfc.h
index f9a10797a..21859abe1 100644
--- a/gr-fft/include/gnuradio/fft/fft_vfc.h
+++ b/gr-fft/include/gnuradio/fft/fft_vfc.h
@@ -48,7 +48,7 @@ class FFT_API fft_vfc : virtual public sync_block
 {
 public:
     // gr::fft::fft_vfc::sptr
-    typedef boost::shared_ptr<fft_vfc> sptr;
+    typedef std::shared_ptr<fft_vfc> sptr;
 
     /*! \brief
      * \param[in] fft_size N.
diff --git a/gr-fft/include/gnuradio/fft/goertzel_fc.h b/gr-fft/include/gnuradio/fft/goertzel_fc.h
index 46e655fac..f3ff011a0 100644
--- a/gr-fft/include/gnuradio/fft/goertzel_fc.h
+++ b/gr-fft/include/gnuradio/fft/goertzel_fc.h
@@ -25,7 +25,7 @@ class FFT_API goertzel_fc : virtual public sync_decimator
 {
 public:
     // gr::fft::goertzel_fc::sptr
-    typedef boost::shared_ptr<goertzel_fc> sptr;
+    typedef std::shared_ptr<goertzel_fc> sptr;
 
     static sptr make(int rate, int len, float freq);