Allow splitting point blocks in splitCurrentBlock
Allow splitting point blocks in splitCurrentBlock

Check for the case that the current block is a point block for point
CurrInstrOffset; in that case, using NextInstrOffset for the split would
extend the block's range, so preserve the smaller end offset.

AndyAyersMS/llilc,pgavlin/llilc,mmitche/llilc,manu-silicon/llilc,kyulee1/llilcjit,dkorolev/llilc,russellhadley/llilc,adiaaida/llilc,BruceForstall/llilc,russellhadley/llilc,richardlford/llilc,marksantos/llilc,kyulee1/llilcjit,pgavlin/llilc,JosephTremoulet/llilc,tempbottle/llilc,BruceForstall/llilc,swaroop-sridhar/llilc,tempbottle/llilc,libengu/llilc,richardlford/llilc,mmitche/llilc,libengu/llilc,swaroop-sridhar/llilc,tempbottle/llilc,BruceForstall/llilc,mmitche/llilc,AndyAyersMS/llilc,richardlford/llilc,dkorolev/llilc,pgavlin/llilc,manu-silicon/llilc,JosephTremoulet/llilc,dotnet/llilc,manu-silicon/llilc,libengu/llilc,AndyAyersMS/llilc,dotnet/llilc,marksantos/llilc,dotnet/llilc,dkorolev/llilc,marksantos/llilc,mmitche/llilc,adiaaida/llilc,swaroop-sridhar/llilc,libengu/llilc,adiaaida/llilc,russellhadley/llilc,kyulee1/llilcjit,JosephTremoulet/llilc