hidapi added as dependency library

Former-commit-id: 067d8ed87d0e416fb8518e05344597a00fc263c2

dependencies/build/hidapi/.gitignore

@@ -0,0 +1,8 @@
+*.o
+*.so
+*.la
+*.lo
+*.a
+.libs
+.deps
+hidtest-libusb

dependencies/build/hidapi/CMakeLists.txt

@@ -0,0 +1,18 @@
+project(hidapi)
+
+#add libusb and pthreads
+find_package(UDev REQUIRED)
+find_package(libusb-1.0 REQUIRED)
+find_package(Threads REQUIRED)
+
+include_directories(
+	../../include/hidapi
+	${UDEV_INCLUDE_DIR}
+	${LIBUSB_1_INCLUDE_DIRS})
+
+add_library(hidapi-libusb hid-libusb.c)
+
+target_link_libraries(hidapi-libusb
+		${LIBUSB_1_LIBRARIES} #apt-get install libusb-1.0-0-dev
+		${CMAKE_THREAD_LIBS_INIT}
+		${UDEV_LIBRARIES}) # apt-get install libudev-dev