Remove field no longer used after previous commit

Issue: SPR-11516
Restored proper handling of varargs in case of unresolvable type variable

Fixed through falling back to the raw parameter type in the TypeDescriptor(MethodParameter) constructor, properly detecting the vararg array even in case of an unresolvable type variable, and through restoring getElementTypeDescriptor's original behavior for arrays, i.e. always returning a non-null descriptor.

Issue: SPR-11494
Relaxed statement on early validation of bean references

Issue: SPR-11495
Upgraded to Hibernate 4.2.10
Simplify test includes & excludes in Gradle build

This commit aligns our include and exclude filters for test classes
with Gradle's standard patterns. Specifically, our patterns now end
with ".class" instead of ".*".

The aforementioned change makes the exclusion of inner classes
unnecessary. Thus, patterns for test classes ending with "TestCase" or
"TestSuite" have been deleted.

Furthermore, the include and exclude patterns previously used in the
spring-test module made it impossible for the
FailingBeforeAndAfterMethodsTests class in the 'testng' package to ever
be executed by the build. This has been addressed by renaming our JUnit
and TestNG variants of FailingBeforeAndAfterMethodsTests and moving the
TestNG variant into the 'junit' package so that it can be picked with
our standard include pattern for JUnit-based tests.