roslib: use Python provided by environment in environment hook

recipes-ros/ros/files/0001-use-env-to-get-python-exec.patch

@@ -0,0 +1,21 @@
+diff -u -r new/env-hooks/10.ros.sh.em old/env-hooks/10.ros.sh.em
+--- old/env-hooks/10.ros.sh.em  2016-03-04 23:20:35.255706716 +0100
++++ new/env-hooks/10.ros.sh.em  2016-03-04 23:19:24.727707608 +0100
+@@ -1,7 +1,7 @@
+ # generated from ros/env-hooks/10.ros.sh.em
+ 
+ # scrub old ROS bin dirs, to avoid accidentally finding the wrong executables
+-export PATH="`@(PYTHON_EXECUTABLE) -c \"import os; print(os.pathsep.join([x for x in \\\"$PATH\\\".split(os.pathsep) if not any([d for d in ['cturtle', 'diamondback', 'electric', 'fuerte'] if d in x])]))\"`"
++export PATH="`/usr/bin/env python -c \"import os; print(os.pathsep.join([x for x in \\\"$PATH\\\".split(os.pathsep) if not any([d for d in ['cturtle', 'diamondback', 'electric', 'fuerte'] if d in x])]))\"`"
+ 
+ if [ -n "$ROS_DISTRO" -a "$ROS_DISTRO" != "indigo" ]; then
+   echo "ROS_DISTRO was set to '$ROS_DISTRO' before. Please make sure that the environment does not mix paths from different distributions."
+@@ -30,7 +30,7 @@
+ print(os.pathsep.join(paths))
+ EOF
+ )
+-export ROS_PACKAGE_PATH="`@(PYTHON_EXECUTABLE) -c \"$PYTHON_CODE_BUILD_ROS_PACKAGE_PATH\"`"
++export ROS_PACKAGE_PATH="`/usr/bin/env python -c \"$PYTHON_CODE_BUILD_ROS_PACKAGE_PATH\"`"
+ 
+ @[if DEVELSPACE]@
+# env variables in develspace

recipes-ros/ros/roslib_1.11.14.bb

@@ -9,4 +9,6 @@ require ros.inc
 
 ROS_PKG_SUBDIR = "core"
 
+SRC_URI += "file://0001-use-env-to-get-python-exec.patch"
+
 RDEPENDS_${PN} = "${PYTHON_PN}-rospkg catkin-runtime"