Correct errors in CMakelist and the ardrone_lib.patch's Makefile

CMakeLists.txt

@@ -70,7 +70,7 @@ ExternalProject_Add(ardronelib
 )
 
 # find sdk directories for headers and libraries
-set(SDK ${CMAKE_BINARY_DIR}/ardrone/ARDroneLib/)
+set(SDK ${CMAKE_BINARY_DIR}/ardrone/src/ardronelib/ARDroneLib/)
 include_directories(${SDK} ${SDK}/FFMPEG/Includes ${SDK}/Soft/Common ${SDK}/Soft/Lib ${SDK}/VP_SDK ${SDK}/VP_SDK/VP_Os/linux )
 link_directories(${CATKIN_DEVEL_PREFIX}/lib)
 

ardrone_lib.patch

@@ -200,7 +200,7 @@ new file mode 100644
 index 0000000..aef450a
 --- /dev/null
 +++ Makefile
-@@ -0,0 +1,23 @@
+@@ -0,0 +1,24 @@
 +SDK_PATH:=$(shell pwd)/ARDroneLib
 +PC_TARGET=yes
 +USE_LINUX=yes