Fix more commands to run correctly in subdirectories

Fix more commands to run correctly in subdirectories

Raised recently with bug #10276, commands manipulating patches might
fail to run correctly (even losing data) in subdirectories, mainly
because of git-apply (see the bug log for explanation). This patch
forces all the patch-modifying commands to go to the top level
directory before acting.

In addition to the above, ot also fixes the resolved and export
commands.

Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>