[lsan] Split the preset for lsan into stdlib -O and -Onone presets.
[lsan] Split the preset for lsan into stdlib -O and -Onone presets.

The current lsan preset used by the bot assumes -O. This is incorrect since:

1. It is a currently known problem that the -O build of swift leaks in the
optimizer on linux.

2. The point of the bot is to ensure that when compiling the stdlib at -Onone,
we are leaks clean.

For more information about the bot see below. Once this lands, I will update the
bot to use the new split preset.

rdar://32876901

----

For those who are unaware, I spent some time investigating and resolving the
leaks at -Onone b/c SourceKit for diagnostic purposes compiles sources at
-Onone, so the leaks could have hit SourceKit. Since SourceKit is a long running
process this could add up over time/etc.

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