Logo refresh for android, windows, and linux

Android: Adopt a new versionCode scheme

This reverts commit 72cf2bdb87f09deff22e1085de3290126aa4ad05.

SYSCONF settings are getting cleared when they shouldn't be. Let's
revert the change until I get proper time to figure out why it's broken.

Clean up Core::GetState

Some pieces of code are calling IsRunning because there's some
particular action that only makes sense when emulation is running, for
instance showing the state of the emulated CPU. IsRunning is appropriate
to use for this. Then there are pieces of code that are calling
IsRunning because there's some particular thing they must avoid doing
e.g. when the CPU thread is running or IOS is running. IsRunning isn't
quite appropriate for this. Such code should also be checking for the
states Starting and Stopping. Keep in mind that:

* When the state is Starting, the state can asynchronously change to
  Running at any time.
* When we try to stop the core, the state gets set to Stopping before we
  take any action to actually stop things.

This commit adds a new method Core::IsUninitialized, and changes all
callers of IsRunning and GetState that look to me like they should be
changed.

Right now, we assign a versionCode to each Android build of Dolphin by
counting the total number of git commits made. This has worked fine so
far, but it won't work as-is for the new release process.

Let's say we're currently on commit 20000. If we want to create a
release under the new release process, we would create a release branch,
add a new commit on it that updates the release name in CMake files and
so on, and create a tag for that commit. The Android build of this
release commit would get the version code 20001. However, the master
branch is also going to get a commit with the version code 20001 sooner
or later, and this commit would be an entirely different commit than
commit 20001 on the release branch. This isn't much of a problem for
people downloading Dolphin from dolphin-emu.org, but it's a big problem
for Google Play, as Google Play doesn't allow us to upload two builds
with the same version code.

This commit makes us calculate the Android version code in a new way:
The number of commits times two, and if the current build isn't a
release build, plus 1. (We check whether the current build is a release
build by checking whether there's a tag for the current commit.)

With this new version code scheme, the release commit described in my
example would get the version code 40002, and the master commit would
get the version code 40003. This lets us upload both corresponding
builds to Google Play, and also lets the user switch from the release
build to the development build if they would like to. (Under normal
circumstances, Android forbids installing a build with an older version
code than the currently installed build. Therefore, whether the 1 is
added for release builds or for development builds is a decision with
consequences.)

Android: Clean up ProGuard