Add a utility script to split a disassembled function from lldb into basic blocks.
Add a utility script to split a disassembled function from lldb into basic blocks.

Useful to show the control flow graph of a disassembled function.
The control flow graph can the be viewed with the viewcfg utility:

(lldb) disassemble
   <copy-paste output to file.s>
$ blockifyasm < file.s | viewcfg

jopamer/swift,allevato/swift,alblue/swift,amraboelela/swift,huonw/swift,jmgc/swift,ahoppen/swift,natecook1000/swift,gribozavr/swift,devincoughlin/swift,shahmishal/swift,glessard/swift,xedin/swift,gregomni/swift,shajrawi/swift,benlangmuir/swift,tjw/swift,brentdax/swift,jopamer/swift,gregomni/swift,austinzheng/swift,allevato/swift,allevato/swift,xedin/swift,stephentyrone/swift,harlanhaskins/swift,practicalswift/swift,roambotics/swift,aschwaighofer/swift,lorentey/swift,CodaFi/swift,sschiau/swift,airspeedswift/swift,natecook1000/swift,airspeedswift/swift,CodaFi/swift,harlanhaskins/swift,devincoughlin/swift,practicalswift/swift,lorentey/swift,jckarter/swift,danielmartin/swift,xedin/swift,karwa/swift,gregomni/swift,CodaFi/swift,hooman/swift,xwu/swift,xedin/swift,huonw/swift,practicalswift/swift,rudkx/swift,apple/swift,brentdax/swift,karwa/swift,tkremenek/swift,roambotics/swift,zisko/swift,alblue/swift,practicalswift/swift,parkera/swift,tkremenek/swift,tjw/swift,airspeedswift/swift,zisko/swift,apple/swift,xedin/swift,alblue/swift,amraboelela/swift,tkremenek/swift,jckarter/swift,devincoughlin/swift,allevato/swift,gribozavr/swift,benlangmuir/swift,benlangmuir/swift,gregomni/swift,huonw/swift,tkremenek/swift,airspeedswift/swift,shajrawi/swift,JGiola/swift,brentdax/swift,amraboelela/swift,nathawes/swift,shahmishal/swift,ahoppen/swift,stephentyrone/swift,xedin/swift,gregomni/swift,huonw/swift,gribozavr/swift,stephentyrone/swift,roambotics/swift,devincoughlin/swift,amraboelela/swift,xwu/swift,zisko/swift,practicalswift/swift,hooman/swift,glessard/swift,glessard/swift,gribozavr/swift,atrick/swift,harlanhaskins/swift,alblue/swift,tjw/swift,shahmishal/swift,CodaFi/swift,gribozavr/swift,sschiau/swift,practicalswift/swift,hooman/swift,karwa/swift,aschwaighofer/swift,lorentey/swift,JGiola/swift,jopamer/swift,shahmishal/swift,shahmishal/swift,huonw/swift,glessard/swift,danielmartin/swift,ahoppen/swift,roambotics/swift,lorentey/swift,CodaFi/swift,lorentey/swift,tkremenek/swift,jckarter/swift,devincoughlin/swift,jopamer/swift,allevato/swift,jckarter/swift,jmgc/swift,shajrawi/swift,apple/swift,rudkx/swift,hooman/swift,stephentyrone/swift,austinzheng/swift,shahmishal/swift,brentdax/swift,zisko/swift,atrick/swift,CodaFi/swift,jopamer/swift,nathawes/swift,parkera/swift,JGiola/swift,aschwaighofer/swift,JGiola/swift,brentdax/swift,shahmishal/swift,danielmartin/swift,natecook1000/swift,austinzheng/swift,parkera/swift,shajrawi/swift,xwu/swift,danielmartin/swift,zisko/swift,karwa/swift,apple/swift,nathawes/swift,amraboelela/swift,glessard/swift,nathawes/swift,karwa/swift,amraboelela/swift,alblue/swift,airspeedswift/swift,rudkx/swift,benlangmuir/swift,austinzheng/swift,stephentyrone/swift,practicalswift/swift,JGiola/swift,atrick/swift,parkera/swift,rudkx/swift,aschwaighofer/swift,harlanhaskins/swift,parkera/swift,xwu/swift,karwa/swift,glessard/swift,JGiola/swift,huonw/swift,atrick/swift,hooman/swift,jopamer/swift,hooman/swift,roambotics/swift,roambotics/swift,aschwaighofer/swift,nathawes/swift,lorentey/swift,xwu/swift,shajrawi/swift,practicalswift/swift,shahmishal/swift,atrick/swift,brentdax/swift,amraboelela/swift,aschwaighofer/swift,jmgc/swift,huonw/swift,xedin/swift,gribozavr/swift,parkera/swift,sschiau/swift,austinzheng/swift,tjw/swift,ahoppen/swift,hooman/swift,jckarter/swift,jmgc/swift,jmgc/swift,natecook1000/swift,harlanhaskins/swift,shajrawi/swift,aschwaighofer/swift,gribozavr/swift,xedin/swift,jckarter/swift,tjw/swift,devincoughlin/swift,xwu/swift,stephentyrone/swift,karwa/swift,natecook1000/swift,gregomni/swift,karwa/swift,benlangmuir/swift,stephentyrone/swift,harlanhaskins/swift,harlanhaskins/swift,austinzheng/swift,lorentey/swift,tjw/swift,sschiau/swift,ahoppen/swift,lorentey/swift,tkremenek/swift,rudkx/swift,zisko/swift,tjw/swift,ahoppen/swift,allevato/swift,alblue/swift,allevato/swift,rudkx/swift,jopamer/swift,austinzheng/swift,danielmartin/swift,devincoughlin/swift,danielmartin/swift,jmgc/swift,nathawes/swift,natecook1000/swift,alblue/swift,benlangmuir/swift,atrick/swift,nathawes/swift,gribozavr/swift,apple/swift,zisko/swift,jmgc/swift,xwu/swift,jckarter/swift,tkremenek/swift,devincoughlin/swift,sschiau/swift,CodaFi/swift,parkera/swift,sschiau/swift,danielmartin/swift,airspeedswift/swift,shajrawi/swift,sschiau/swift,sschiau/swift,airspeedswift/swift,apple/swift,brentdax/swift,shajrawi/swift,parkera/swift,natecook1000/swift