Move cppcheck logic from Makefile and CMakeLists.txt to tools/check-cppcheck.sh

The legacy approach executed cppcheck for every build target, which
resulted in a huge number of re-checks of the sources if more than
one targets were built. The main reason behind that was to get the
right macro-guarded code paths analyzed. However, cppcheck can
analyze every configuration of the sources in one go.

(The patch also contains some aesthetic changes around the way
vera++ is called and how errors are reported.)

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

.travis.yml

@@ -13,7 +13,7 @@ install: make prerequisites
 script: "make -j VERBOSE=1 NINJA=1 $TARGET"
 
 env:
-  - TARGET="check-signed-off check-vera check-cpp"
+  - TARGET="check-signed-off check-vera check-cppcheck"
   - TARGET="build.linux test-js-precommit"
   - TARGET=build.mcu_stm32f3
   - TARGET=build.mcu_stm32f4