Remove the need of signapk

Change-Id: I900f9957e42a2965661edb1b2afb4c93a98dca5d
Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
main.mk: disabling java requirements as we don't use it

Change-Id: Ic1013d0632aa010a9e795660ead84bce6b22cce3
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Do not build Android recovery OTA keys.

This disables one of the last pieces needing Java at build time.

Change-Id: I6c0fe42d0c1e525f4969faa7eca38e7943b2f192
Signed-off-by: Jani Monoses <jani.monoses@canonical.com>
Do not check for the JDK anymore.

Since the build does not rely on Java do not probe for the JDK.

Change-Id: I3b5fc40509614e0cbef9375a80f9c7b12d703842
Signed-off-by: Jani Monoses <jani.monoses@canonical.com>
core: support make 4.00

Make 4.00 is now out, and builds work fine with it.

Change-Id: I49e36d651a7997a52270badb0e8badd975f64e8f