Bug: https://bugzilla.gnome.org/show_bug.cgi?id=616668
Author: Emilio Pozuelo Monfort <pochu@debian.org>

Use sys.prefix to look for libpython, rather than dirname $PYTHON

--- a/acinclude.m4
+++ b/acinclude.m4
@@ -60,7 +60,6 @@
 $2])
 CPPFLAGS="$save_CPPFLAGS"
 
-	# This bit is copied from Planner. murrayc.
 	# Check for Python library path
         AC_MSG_CHECKING([for Python library path])
 
@@ -69,8 +68,7 @@
 	# libpython2.5.a on unix.
 	WIN32_PYTHON_VERSION=`echo $PYTHON_VERSION | sed "s,\.,,"`
 
-        python_path=`dirname $PYTHON | sed "s,/bin.*$,,"`
-        for i in "$python_path/lib/python$PYTHON_VERSION/config/" "$python_path/lib/python$PYTHON_VERSION/" "$python_path/lib/python/config/" "$python_path/lib/python/" "$python_path/" ; do
+        for i in "$py_prefix/lib/python$PYTHON_VERSION/config/" "$py_prefix/lib/python$PYTHON_VERSION/" "$py_prefix/lib/python/config/" "$py_prefix/lib/python/" "$py_prefix/" ; do
 		if test -e "$i"; then
 	                python_path=`find $i -type f -name libpython$PYTHON_VERSION.* -print | sed "1q"`
         	        if test -n "$python_path" ; then