DSPEmitter: Minor changes

[lioncash]

Basic stuff. Feel free to suggest better names for the unresolved jump functions if they can be made more informative.

[BhaaLseN]

Reviewed 4 of 4 files at r1.
Review status: all files reviewed at latest revision, 2 unresolved discussions.

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Source/Core/Core/DSP/DSPCore.cpp, line 325 [r1] (raw file):
This loop kinda feels like it could be written in a nicer way (like, a for-each or something like that). Not sure if that is actually possible tho, since Compile modifies the list of unresolved jumps iirc).
It also leaves the impression that it might belong in the DSP Jit class, since every call is going thru g_dsp_jit.

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Source/Core/Core/DSP/DSPEmitter.cpp, line 426 [r1] (raw file):
Has(Any)UnresolvedJumpsAtAddress perhaps?

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Comments from the review on Reviewable.io

[RisingFog]

This PR needs to be rebased.

[lioncash]

Most of these changes have been done through recent changes to the DSP code, so I'll be closing this.