qt4: Add meta-toolchain-qte and dependent tasks from OpenEmbedded

qt4: Add meta-toolchain-qte and dependent tasks from OpenEmbedded

Differences from OE versions:

task-qte-toolchain-target.bb:
 * Depend on task-poky-standalone-sdk-target instead of task-sdk-bare
 * Add LIC_FILES_CHKSUM
 * Correct libsqlite3-dev dependency for Poky
 * Remove dependency on libts-dev
 * Remove QtDeclarative as it does not build for 4.6.3. (This will need
   to be addressed in a future update.)

task-qte-toolchain-host.bb
 * Fix for Poky directory structure
 * qt4-tools-sdk -> qt4-tools-nativesdk

meta-toolchain-qte:
 * Fix for Poky directory structure
 * Use "tar --owner=root" instead of fakeroot
 * Remove angstrom-specific suffix

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>