genpy: Correct patch to setup python binary path

This closes #69 and #80 with the following error:
*** No rule to make target `/usr/lib/genpy/genmsg_py.py', needed by
`devel/lib/python2.7/site-packages/std_msgs/msg/_Bool.py'.  Stop.

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>

recipes-ros/genpy/genpy/0001-genpy-extras.cmake.em-use-find_program-for-GENxxx_PY_BIN.patch

 diff -Naur a/cmake/genpy-extras.cmake.em b/cmake/genpy-extras.cmake.em
---- a/cmake/genpy-extras.cmake.em	2012-12-22 03:39:57.000000000 +0100
-+++ b/cmake/genpy-extras.cmake.em	2013-05-22 10:46:08.000000000 +0200
-@@ -1,11 +1,16 @@
+--- a/cmake/genpy-extras.cmake.em	2013-05-30 12:31:39.000000000 +0200
++++ b/cmake/genpy-extras.cmake.em	2013-05-30 12:43:02.000000000 +0200
+@@ -1,13 +1,15 @@
  @[if DEVELSPACE]@
  # bin dir variables in develspace
  set(GENPY_BIN_DIR @(CMAKE_CURRENT_SOURCE_DIR)/scripts)
@@ -14,7 +14,8 @@ diff -Naur a/cmake/genpy-extras.cmake.em b/cmake/genpy-extras.cmake.em
  
 +find_program(GENMSG_PY_BIN genmsg_py.py PATHS ${GENPY_BIN_DIR} NO_DEFAULT_PATH CATKIN_FIND_ROOT_PATH_MODE)
 +find_program(GENSRV_PY_BIN gensrv_py.py PATHS ${GENPY_BIN_DIR} NO_DEFAULT_PATH CATKIN_FIND_ROOT_PATH_MODE)
-+
- set(GENMSG_PY_BIN ${GENPY_BIN_DIR}/genmsg_py.py)
- set(GENSRV_PY_BIN ${GENPY_BIN_DIR}/gensrv_py.py)
+-set(GENMSG_PY_BIN ${GENPY_BIN_DIR}/genmsg_py.py)
+-set(GENSRV_PY_BIN ${GENPY_BIN_DIR}/gensrv_py.py)
  
+ # Generate .msg->.h for py
+ # The generated .h files should be added ALL_GEN_OUTPUT_FILES_py

recipes-ros/genpy/genpy_0.4.10.bb

@@ -7,7 +7,7 @@ DEPENDS = "genmsg-native"
 RDEPENDS_${PN} = "python-math genmsg python-shell"
 RDEPENDS_${PN}_class-native = ""
 
-PR = "r1"
+PR = "r2"
 
 SRC_URI = "https://github.com/ros/${BPN}/archive/${PV}.tar.gz;downloadfilename=${BP}.tar.gz \
            file://0001-genpy-extras.cmake.em-use-find_program-for-GENxxx_PY_BIN.patch"