support/dependencies, scripts: accept patches with renames

support/dependencies, scripts: accept patches with renames

Currently, patches with renames are refused, as they reqire patch 2.7
or newer. So far, we did not require that version because it was too
recent to be widely available.

But patch 2.7 has been released in 2012, almost 9 years ago now; it is
old enough that we can start relying on it.

Add a check that patch is GNU patch 2.7 or newer, and so drop the common
check for patch, and drop the check about renames in apply-patches.sh.

Signed-off-by: Ryota Kinukawa <pojiro.jp@gmail.com>
[yann.morin.1998@free.fr:
  - drop common check
  - shorten variable names
  - drop now-incorrect comment about busybox w/desktop
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>