Make internal SD (emmc) the primary storage

Necessary to fix the CMUpdater/recovery disaster post 4.3 without hacking
away at recovery code as everything assumes this kind of setup.
It's also "mandatory for CM10", so maybe we're a little late here. :D

When (if) the vold switchable pair stuff gets merged this shouldn't be much of
a problem, but I'm sure there are going to be "vocal" users following this change. :(

Conflicts:
	overlay/frameworks/base/core/res/res/xml/storage_list.xml
	ramdisk/init.huawei.rc
recovery.fstab: rename sdcards

/emmc -> /sdcard
/sdcard -> /external_sd

This satisfies CMUpdater so that alternateIsInternal is not set to true,
and we get /sdcard passed to recovery.

Conflicts:
	recovery.fstab