instead of label ID's.  This cleans up and regularizes a bunch 
of code and makes way for future progress.

Unfortunately, this pointed out to me that JITDwarfEmitter.cpp
is largely copy and paste from DwarfException/MachineModuleInfo
and other places.  This is very sad and disturbing. :(

One major change here is that TidyLandingPads moved from being
called in DwarfException::BeginFunction to being called in
DwarfException::EndFunction.  There should not be any 
functionality change from doing this, but I'm not an EH expert.

llvm-svn: 98459

their appropriate sections before the code itself. They need to be emitted
before the function because on some targets (x86 but not x86_64) the later
may reference a JT or CP entry address

llvm-svn: 76672

llvm-svn: 74821

llvm-svn: 74760

llvm-svn: 74718

Add section symbols to the symbol table

llvm-svn: 74170

relocation sections.

llvm-svn: 73038

llvm-svn: 72982

MachO Writer. This will change with the arrival of ObjectCodeEmitter and
BinaryObject

llvm-svn: 72906

llvm-svn: 72785