[kernel] WITH_DEV_PCIE -> WITH_KERNEL_PCIE

Hard-code this in KERNEL_DEFINES rather than relying on the
magic predefine based on the presence of the dev/pcie module.

Test: CQ & manual verification that kernel text size didn't change
Change-Id: Id827a8a93bc61ac8b1d7727f51a18f53277a7a16

[kernel] Dispatchers and most kernel objects lockdep instrumented.

- Convert SoloDispatcher to a CRTP template type similar to
PeerDispatcher. This makes the lock classes for different solo
dispatchers distinct.
- Instrument the locks for all dispatchers.
- Instrument the locks for all kernel objects except those that
lock the thread_lock.

Bug: ZX-23
Test: k ut all and system/test/* pass + manual stress testing.

Change-Id: I8106c04911e47ea15ccce8e7abd5fbd62adfa6fe

[zx] Magenta -> Zircon

The Great Renaming is here!

Change-Id: I3229bdeb2a3d0e40fb4db6fec8ca7d971fbffb94

[zircon][mxtl->fbl] Rename mxtl to fbl

Change-Id: Ie21b6498e1bfb0a7fa0315e40b9e5c3ee78646be

[user_copy] Remove lib/user_copy.h and object/user_copy.h

Make everyone use user_ptr or arch_copy_{to/from}_user.

Change-Id: I599463711fcd28f96638bae8dc6e59c106a11fd4

[lib/magenta] Rename kernel/lib/magenta to kernel/object

TODO: Rename magenta.{cpp,h} and other instances of "magenta" in this
module.

For MG-1091 "Rename kernel/lib/magenta"

Change-Id: I2abc316f543798e00d3a4d1c2c83195da26e6836