Use specific exception class to abort transaction

We used to throw a java.lang.InternalError when aborting a
transaction (when preinitializing image classes at compilation time).

We now use dedicated class dalvik.system.TransactionAbortError that
is only thrown by the compiler to abort a transaction. This class has
constructors taking a java.lang.Throwable "cause" so we can wrap
exceptions causing the transaction to abort (for instance class
java.lang.ClassNotFoundException) and give more information about the
cause of the transaction abort.

Bug: 20019689
Change-Id: I019a72a1c754d8bba6a7ad6bb0f02e4fd6668622