[fs][fidl] Replaced filesystem ioctls with FIDL.

This patch allows "ioctl" to be removed from the
C++ VFS Vnode interface.

IOCTL_VFS_MOUNT_FS -> Mount()
IOCTL_VFS_UNMOUNT_FS -> Unmount()
IOCTL_VFS_UNMOUNT_NODE -> UnmounteNode()
IOCTL_VFS_QUERY_FS -> QueryFilesystem()
IOCTL_VFS_MOUNT_MKDIR_FS -> MountAndCreate()
IOCTL_VFS_GET_DEVICE_PATH -> GetDevicePath()
IOCTL_VFS_WATCH_DIR -> WatchDir()

Test: fs-management / fs / blobfs / fvm tests, df manually

Change-Id: Iefe8ec251ca6b8f4e4578ceb61bae6dff7a59e3d

[fidl] Rename FIDL directories

These names more closely match what we publish in the SDK. Ideally, we'd
use . as the separator, but Zircon's build system cannot handle . in
directory names, so we use - instead.

Test: Builds.
Change-Id: Ia420a364d2accac39faebade8f3f8ed72088556a

[virtcon] Switch to fdio_spawn_etc

Most codepaths that create processes should use fdio_spawn rather than
launchpad directly.

Test: Manually verified that virtual consoles continue to work (both
normally and in zedbood)

Change-Id: Ic3e1cdf77b38e7fa3f33596443da4efa8b9db5bc

[virtcon] Revert "Switch to fdio_spawn_etc"

This reverts commit a3c1715d3163ebd51f4e3f734bae27e955c3e67c.

The original change broke the ability to get to a virtual console
while in zedboot, which makes a number of classes of failure much
more difficult to recover from.

TEST=manual, now I have virtual consoles in zedboot

Change-Id: I77428e999c4bb2e9e6f97ce89d313c3bd2b5e29f

[virtcon] Switch to fdio_spawn_etc

Most codepaths that create processes should use fdio_spawn rather than
launchpad directly.

Test: Manually verified that virtual consoles continue to work.

Change-Id: Ia2f2f62ef28565973da7c2e7d364800a7ecf815f

[virtcon] Migrate to new display APIs

Change-Id: Ia204796d3e52a7ca934fc171f4a231c89110dc1f

[zx] Magenta -> Zircon

The Great Renaming is here!

Change-Id: I3229bdeb2a3d0e40fb4db6fec8ca7d971fbffb94

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

Change-Id: Ie21b6498e1bfb0a7fa0315e40b9e5c3ee78646be

[build][groups] annotate 'misc' and 'test' modules

This allows us to generate a bootdata.bin which excludes them,
reducing it from 4.52MB to 2.65MB

The default bootdata.bin still includes all modules.

Change-Id: If13bfcacba9386a691e6b7c380eed53d67bb44eb

[virtcon] cleanup

- remove some unused header includes
- remove unused vcdebug.h (xprintf was not used and now virtcon
filters its own debug prints out of the debug log console so
printf is safe to use if needed)
- clean up rules.mk to better reflect shared sources, libraries
- move shared code from main.cpp to vc-input.cpp
- no longer include main.cpp in virtual-console-test
- remove global lock, no longer needed in new single threaded design

Change-Id: I5aacc0f95f817f25ce96bbfa2f74d4877e9c4a16

[virtcon] eliminate input threads, use ports instead

Change-Id: I35616723c597840400d4155a108829dab5f00793

[virtcon] Keyboard handling: Implement setting the Caps Lock LED

Tell the keyboard to light the LED when Caps Lock is on.

Change-Id: I3e6989b8378f095e1c8274b7dc7d551686215f9c

[gfxconsole][virtcon] move and rename gfxconsole to virtcon

It's no longer a device, it's time for it to leave the
land of devices.

Change-Id: I977c56dbacb0794e6f67daac1dd6e3f4f2632f3d