Update astrometry.net to 0.67+ (partial futurized version)

Has updates to the build system so that it can build on systems with python3,
but does not have any py3 updates to the python code itself.

Removed previous patch files since they fail to apply.

So we can better reconstruction the version of astrometry.net that was used here
(since it isn't an official release), the tarball is now named with the git hash
of the upstream master. I also pulled out the Makefile patches in my Pull Request
into a patchfile against that version.

patches/0001-Make-python-sed-like-line-py2-3-compatible.patch

@@ -0,0 +1,58 @@
+From 5a7f73b3f93e9bf398b9e2c59b02f14120827c58 Mon Sep 17 00:00:00 2001
+From: "John K. Parejko" <parejkoj@uw.edu>
+Date: Wed, 14 Sep 2016 14:01:43 -0700
+Subject: [PATCH] Make python sed-like line py2/3 compatible
+
+---
+ blind/Makefile       | 2 +-
+ libkd/Makefile       | 4 ++--
+ util/makefile.common | 2 +-
+ 3 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/blind/Makefile b/blind/Makefile
+index f233a49..abe3661 100644
+--- a/blind/Makefile
++++ b/blind/Makefile
+@@ -225,7 +225,7 @@ install: $(INSTALL_EXECS) $(INSTALL_LIB)
+ 		cp $$x '$(INSTALL_DIR)/bin'; \
+ 	done
+ 	mkdir -p '$(ETC_INSTALL_DIR)'
+-	$(PYTHON) -c "import os; print open('../etc/astrometry.cfg-dist').read().replace('DATA_INSTALL_DIR', '$(DATA_FINAL_DIR)')" > '$(ETC_INSTALL_DIR)/astrometry.cfg'
++	$(PYTHON) -c "import os; print(open('../etc/astrometry.cfg-dist').read().replace('DATA_INSTALL_DIR', '$(DATA_FINAL_DIR)'))" > '$(ETC_INSTALL_DIR)/astrometry.cfg'
+ 	mkdir -p '$(INCLUDE_INSTALL_DIR)'
+ 	@for x in $(INSTALL_H); do \
+ 		echo cp '$(INCLUDE_DIR)/'$$x '$(INCLUDE_INSTALL_DIR)'; \
+diff --git a/libkd/Makefile b/libkd/Makefile
+index 32a7334..f535986 100644
+--- a/libkd/Makefile
++++ b/libkd/Makefile
+@@ -99,11 +99,11 @@ spherematch_c$(PYTHON_SO_EXT): pyspherematch.c setup.py $(SLIB)
+ # pyspherematch.c includes Python.h -- so have to make sure to add Python.h include path
+ # (otherwise, get an obscure message from numpy about needing a python built with unicode)
+ ifeq ($(MAKECMDGOALS),spherematch_c$(PYTHON_SO_EXT))
+-  CFLAGS += $(shell $(PYTHON) -c "from __future__ import print_function; from distutils.sysconfig import *; print('-I'+get_python_inc())")
++  CFLAGS += $(shell $(PYTHON) -c "from distutils.sysconfig import *; print('-I'+get_python_inc())")
+   DEP_OBJ += $(PYSPHEREMATCH_OBJ)
+ endif
+ ifeq ($(MAKECMDGOALS),pyspherematch)
+-  CFLAGS += $(shell $(PYTHON) -c "from __future__ import print_function; from distutils.sysconfig import *; print('-I'+get_python_inc())")
++  CFLAGS += $(shell $(PYTHON) -c "from distutils.sysconfig import *; print('-I'+get_python_inc())")
+   DEP_OBJ += $(PYSPHEREMATCH_OBJ)
+ endif
+
+diff --git a/util/makefile.common b/util/makefile.common
+index 884ee8e..6bbfef2 100644
+--- a/util/makefile.common
++++ b/util/makefile.common
+@@ -110,7 +110,7 @@ ifneq (CYGWIN,$(findstring CYGWIN,$(UNAME)))
+ endif 
+
+ # Get the library suffix used by python distutils (.dll on cygwin, .so elsewhere)
+-PYTHON_SO_EXT ?= $(shell $(PYTHON) -c "from __future__ import print_function; from distutils import sysconfig; print(sysconfig.get_config_var('SO'))")
++PYTHON_SO_EXT ?= $(shell $(PYTHON) -c "from distutils import sysconfig; print(sysconfig.get_config_var('SO'))")
+ # Set a default, otherwise terrible things happen:
+ #   in util/Makefile : clean: rm -f *$(PYTHON_SO_EXT)
+ ifeq ($(PYTHON_SO_EXT)x,x)
+-- 
+2.4.5
+