Correctly deal with abi::__cxa_demangle() on LCC

abi::__cxa_demangle("7MyArrayIbLi42EE", nullptr, nullptr, nullptr)
returns "MyArray<bool, 42>" on GCC/x86_64, but "MyArray<bool, (int)42>"
on LCC/e2k. This behavior causes googletest-list-tests-unittest test to
fail.

This commit fixes that by slightly modifying the regex to match this
behavior of abi::__cxa_demangle().

googletest/test/googletest-list-tests-unittest.py

@@ -74,7 +74,7 @@ TypedTest/0\.  # TypeParam = (VeryLo{245}|class VeryLo{239})\.\.\.
 TypedTest/1\.  # TypeParam = int\s*\*( __ptr64)?
   TestA
   TestB
-TypedTest/2\.  # TypeParam = .*MyArray<bool,\s*42>
+TypedTest/2\.  # TypeParam = .*MyArray<bool,\s*(\(int\))?42>
   TestA
   TestB
 My/TypeParamTest/0\.  # TypeParam = (VeryLo{245}|class VeryLo{239})\.\.\.
@@ -83,7 +83,7 @@ My/TypeParamTest/0\.  # TypeParam = (VeryLo{245}|class VeryLo{239})\.\.\.
 My/TypeParamTest/1\.  # TypeParam = int\s*\*( __ptr64)?
   TestA
   TestB
-My/TypeParamTest/2\.  # TypeParam = .*MyArray<bool,\s*42>
+My/TypeParamTest/2\.  # TypeParam = .*MyArray<bool,\s*(\(int\))?42>
   TestA
   TestB
 MyInstantiation/ValueParamTest\.