ART: Expression evaluation in Checker

It can be useful for tests to evaluate small `assert`-like expressions.
This patch adds such support to Checker, with a new CHECK-EVAL line.
See README file for more details.

Change-Id: I184f7c8e8b53f7e93cfb08fcf9630b4724fa5412
diff --git a/tools/checker/run_unit_tests.py b/tools/checker/run_unit_tests.py
index 2f5b1fe..2e8f208 100755
--- a/tools/checker/run_unit_tests.py
+++ b/tools/checker/run_unit_tests.py
@@ -17,9 +17,10 @@
 from common.logger                 import Logger
 from file_format.c1visualizer.test import C1visualizerParser_Test
 from file_format.checker.test      import CheckerParser_PrefixTest, \
-                                          CheckerParser_RegexExpressionTest, \
+                                          CheckerParser_TestExpressionTest, \
                                           CheckerParser_FileLayoutTest, \
-                                          CheckerParser_ArchTests
+                                          CheckerParser_ArchTests, \
+                                          CheckerParser_EvalTests
 from match.test                    import MatchLines_Test, \
                                           MatchFiles_Test