Fix GetTickCount() for Android.

http://stackoverflow.com/questions/17188761/how-to-obtain-computation-time-in-ndk
Fix GetTickCount() for Android.

http://stackoverflow.com/questions/11210063/clock-gettime-can-not-update-instantly
SystemClock.elapsedRealtime()
Add traverseImageShapes() and MgFindImageCallback.
Add MgShapes::traverseByType().
Restore changeCount too.
Change hi-light line width.
Add MgStringCallback to avoid char* pointer’s leak.
Add isCommand.
R17: Add loadFirstFrame(filename). Fix MgCmdManagerFactory for static _factories.
Change log.
Fix strcmp(NULL).
Add view parameter for stopRecord.
Add GiCoreView:: release().
Add enumeration of TestCanvas.
Add javaconst(1) for GiContext.
Add redraw(bool changed).
Add dynDraw(..arr).
Add MgPlaying.
Add resetDoc(doc). Remove parameter from MgPlaying.submitShapes.