JVS: add g_pPINS(A|B) variables support

[RadWolfie]

I made some minor fixes to the scan process that were found during analysis process.

• Fixed DeviceTypeInfoTable's list may can contain null pointer and extreme size. Most likely caused by XDK build bug but shouldn't break the hardware though.
• Fixed retain highest build version regardless of unknown library included.
• Fixed missing JVS' Library<->String conversion functions.

Finally, after a hefty review according to final #75 task. I discovered JVS_g_pPINSA and JVS_g_pPINSB variables can be migrate into our existing signatures to obtain derived addresses. I had to make additional signature for JVS_SendCommand3 since there are two different revisions of it. With this pull request, there is no need for manual scan.