especially nice as the Windows toolchain needs the windows header files,
and has lots of platform specific hooks in it.

To facilitate the split, hoist a bunch of file-level static helpers into
class-level static helpers. Spiff up their doxygen comments while there
as they're now more likely to be looked up via docs.

Hopefully, this will be followed by further breaking apart of the
toolchain definitions. Most of the large and complex ones should likely
live on their own. I'm looking at you Darwin. ;]

llvm-svn: 146840

llvm-svn: 143770

llvm-svn: 125275

This reverts commit r113631

Conflicts:

	CMakeLists.txt
	lib/CodeGen/CMakeLists.txt

llvm-svn: 113817

of whatever we were using before...

llvm-svn: 113631

llvm-svn: 113489

llvm-svn: 106188

Driver/MC: Add 'clang -cc1as' integrated assembler tool, currently accepts approximately the same interface as 'llvm-mc'.

llvm-svn: 104239

llvm-svn: 99191

llvm-svn: 89332

llvm-svn: 89330

llvm-svn: 89288

llvm-svn: 89283

llvm-svn: 73976

llvm-svn: 73700

llvm-svn: 67633

llvm-svn: 66884

driver taking lib/Driver.

llvm-svn: 65811

llvm-svn: 60269

llvm-svn: 58716

must be under the `tools' subdirectory of the LLVM *source* tree.

llvm-svn: 58180