Update paths in check tools (#1772)

In #1761, not all unit test paths have been updated in check tools.
This triggers no errors as `check-vera` emits a warning only while
`check-cppcheck` signals nothing. Still, this means that some of
the code in the repository that has been quality-assured, is now
avoiding checks. This patch fixes this.

Moreover, `check-cppcheck` has had incorrect paths for a while: it
looked for source files in the root of the repository, but those
files have been in `jerry-main` for almost a year now. This patch
fixes this, too.

Fallout of the above: `main-unix-minimal.c` had to be improved to
make `check-cppcheck` pass.

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

tools/check-cppcheck.sh

@@ -41,4 +41,4 @@ cppcheck -j$CPPCHECK_JOBS --force \
  --exitcode-suppressions=tools/cppcheck/suppressions-list \
  --suppressions-list=tools/cppcheck/suppressions-list \
  "${INCLUDE_DIRS[@]}" \
- jerry-core targets/default jerry-libc jerry-libm *.c *h tests/unit
+ jerry-core targets/default jerry-libc jerry-libm jerry-main tests/unit-*