Fix several pylint warnings. (#1644)

Fixed
 * 'unused-wildcard-import'
 * 'bad-whitespace'
 * 'bad-continuation'
 * 'wrong-import-order'
in 'build.py', 'run-tests.py' and 'check-license.py'.

Related issue: #1600

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

tools/check-license.py

@@ -17,7 +17,7 @@
 import os
 import re
 import sys
-from settings import *
+import settings
 
 
 license = re.compile(
@@ -48,7 +48,7 @@ dirs = [
 
 exclude_dirs = [
     'targets/esp8266',
-    os.path.relpath (TEST262_TEST_SUITE_DIR, PROJECT_DIR),
+    os.path.relpath (settings.TEST262_TEST_SUITE_DIR, settings.PROJECT_DIR),
 ]
 
 exts = [