[Sema] Descriptive -debug-time-function-bodies
[Sema] Descriptive -debug-time-function-bodies

Generated getters and setters don't have their names printed alongside them in
the log output for `-debug-time-function-bodies`. Here are some examples:

```
get {}
set {}
final get {}
final set {}
@objc get {}
@objc set {}
@objc final get {}
@objc final set {}
(closure)
```

Re-use the logic from the diagnostics for `-warn-long-function-bodies=`
in order to print getter and setter names (but not attributes such as
`final` or `@objc`), for example:

```
geter bar
setter bar
global function foo()
global function baz(one:two:three:)
deinitializer deinit
initializer init()
```

Addresses https://bugs.swift.org/browse/SR-2910.

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