Jit: Make debugging mode aware of inlineExecute/moveResult optimization

The Jit has a mode in which selected opcodes can be handled normally
or single-stepped in the interpter.  This was broken for cases in
which the Jit applied an optimization to fold inlineExecute/moveResult
intruction pairs into a single operation and the debug mode was set
to handle the two opcodes differently.

Change-Id: Ifa436d4ba66ba0c13ea366c0956e6cf92ce9cdfd