add unpackbootimg to otatools

Change-Id: I4e294c05eacc8bef8273247bcf1bf382291a3d31
build: display the full path of the installed libs, to allow copy paste
Make the recovery ramdisk target depend on $(MKBOOTIMG) $(INTERNAL_BOOTIMAGE_FILES) rather than $(INSTALLED_BOOTIMAGE_TARGET). This fixes the circular dependency for when the kernel depends on the recovery ramdisk, which depends on the boot image, which depends on the kernel.

Change-Id: I658bedc329f2ea0170ac0012f80ca7d779b1c242
 build: fix target header overlay
LOCAL_C_INCLUDES as defined by the makefile should be put AFTER
the overlay includes so the overlay always takes precedence.
Fix: build: display the full path of the installed libs, to allow copy paste...
When OUT_DIR is not out, it'll show the wrong path, as the out dir
won't be under ANDROID_BUILD_TOP
fix sdk target with absolute OUT_DIR

Add / to atree's search path.

since I459a3b13 OUT_DIR is absolute. atree uses these variables and
due to "-I ." tries to resolve these paths as relative paths.

Change-Id: Ic9fbc84acdd9f438dfc813f6496e2c5e0d761976