adbsu: Remount /system directly for 'su -c' situations
adbsu: Remount /system directly for 'su -c' situations

Change-Id: Iefe1173ba7c2fba7a9a4ab537c6acebbeaff10ff
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools