Platform: Ensure classes match their header filename

Also drop some unused files.

Renamed:
- `platform/iphone/sem_iphone.h` -> `semaphore_iphone.h`
  (same for `osx`)
- `platform/uwp/gl_context_egl.h` -> `context_egl_uwp.h`
- in `platform/windows`: `context_gl_win.h`, `crash_handler_win.h`,
  `godot_win.cpp`, `joypad.h` and `key_mapping_win.h` all renamed to
  use `windows`. Some classes renamed accordingly too.
- `EditorExportAndroid` and `EditorExportUWP` renamed to
  `EditorExportPlatformAndroid` and `EditorExportPlatformUWP`
- `power_android` and `power_osx` renamed to `PowerAndroid` and
  `PowerOSX`
- `OSUWP` renamed to `OS_UWP`

Dropped:
- `platform/windows/ctxgl_procaddr.h`

platform/android/export/export.cpp

@@ -206,9 +206,9 @@ static const LauncherIcon launcher_icons[] = {
 	{ "launcher_icons/mdpi_48x48", "res/drawable-mdpi-v4/icon.png" }
 };
 
-class EditorExportAndroid : public EditorExportPlatform {
+class EditorExportPlatformAndroid : public EditorExportPlatform {
 
-	GDCLASS(EditorExportAndroid, EditorExportPlatform)
+	GDCLASS(EditorExportPlatformAndroid, EditorExportPlatform)
 
 	Ref<ImageTexture> logo;
 	Ref<ImageTexture> run_icon;
@@ -235,7 +235,7 @@ class EditorExportAndroid : public EditorExportPlatform {
 
 	static void _device_poll_thread(void *ud) {
 
-		EditorExportAndroid *ea = (EditorExportAndroid *)ud;
+		EditorExportPlatformAndroid *ea = (EditorExportPlatformAndroid *)ud;
 
 		while (!ea->quit_request) {
 
@@ -1925,7 +1925,7 @@ public:
 	virtual void resolve_platform_feature_priorities(const Ref<EditorExportPreset> &p_preset, Set<String> &p_features) {
 	}
 
-	EditorExportAndroid() {
+	EditorExportPlatformAndroid() {
 
 		Ref<Image> img = memnew(Image(_android_logo));
 		logo.instance();
@@ -1941,7 +1941,7 @@ public:
 		device_thread = Thread::create(_device_poll_thread, this);
 	}
 
-	~EditorExportAndroid() {
+	~EditorExportPlatformAndroid() {
 		quit_request = true;
 		Thread::wait_to_finish(device_thread);
 		memdelete(device_lock);
@@ -1969,6 +1969,6 @@ void register_android_exporter() {
 	EDITOR_DEF("export/android/timestamping_authority_url", "");
 	EDITOR_DEF("export/android/shutdown_adb_on_exit", true);
 
-	Ref<EditorExportAndroid> exporter = Ref<EditorExportAndroid>(memnew(EditorExportAndroid));
+	Ref<EditorExportPlatformAndroid> exporter = Ref<EditorExportPlatformAndroid>(memnew(EditorExportPlatformAndroid));
 	EditorExport::get_singleton()->add_export_platform(exporter);
 }

platform/android/os_android.cpp

@@ -175,7 +175,7 @@ Error OS_Android::initialize(const VideoMode &p_desired, int p_video_driver, int
 	input = memnew(InputDefault);
 	input->set_fallback_mapping("Default Android Gamepad");
 
-	//power_manager = memnew(power_android);
+	//power_manager = memnew(PowerAndroid);
 
 	return OK;
 }

platform/android/os_android.h

@@ -134,7 +134,7 @@ private:
 	SetKeepScreenOnFunc set_keep_screen_on_func;
 	AlertFunc alert_func;
 
-	//power_android *power_manager;
+	//PowerAndroid *power_manager;
 	int video_driver_index;
 
 public:

platform/android/power_android.cpp

@@ -190,7 +190,7 @@ int Android_JNI_GetPowerInfo(int *plugged, int *charged, int *battery, int *seco
 	return 0;
 }
 
-bool power_android::GetPowerInfo_Android() {
+bool PowerAndroid::GetPowerInfo_Android() {
 	int battery;
 	int plugged;
 	int charged;
@@ -218,7 +218,7 @@ bool power_android::GetPowerInfo_Android() {
 	return true;
 }
 
-OS::PowerState power_android::get_power_state() {
+OS::PowerState PowerAndroid::get_power_state() {
 	if (GetPowerInfo_Android()) {
 		return power_state;
 	} else {
@@ -227,7 +227,7 @@ OS::PowerState power_android::get_power_state() {
 	}
 }
 
-int power_android::get_power_seconds_left() {
+int PowerAndroid::get_power_seconds_left() {
 	if (GetPowerInfo_Android()) {
 		return nsecs_left;
 	} else {
@@ -236,7 +236,7 @@ int power_android::get_power_seconds_left() {
 	}
 }
 
-int power_android::get_power_percent_left() {
+int PowerAndroid::get_power_percent_left() {
 	if (GetPowerInfo_Android()) {
 		return percent_left;
 	} else {
@@ -245,11 +245,11 @@ int power_android::get_power_percent_left() {
 	}
 }
 
-power_android::power_android() :
+PowerAndroid::PowerAndroid() :
 		nsecs_left(-1),
 		percent_left(-1),
 		power_state(OS::POWERSTATE_UNKNOWN) {
 }
 
-power_android::~power_android() {
+PowerAndroid::~PowerAndroid() {
 }

platform/android/power_android.h

@@ -28,13 +28,14 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef PLATFORM_ANDROID_POWER_ANDROID_H_
-#define PLATFORM_ANDROID_POWER_ANDROID_H_
+#ifndef POWER_ANDROID_H
+#define POWER_ANDROID_H
 
 #include "core/os/os.h"
+
 #include <android/native_window_jni.h>
 
-class power_android {
+class PowerAndroid {
 
 	struct LocalReferenceHolder {
 		JNIEnv *m_env;
@@ -65,8 +66,8 @@ private:
 public:
 	static int s_active;
 
-	power_android();
-	virtual ~power_android();
+	PowerAndroid();
+	virtual ~PowerAndroid();
 	static bool LocalReferenceHolder_Init(struct LocalReferenceHolder *refholder, JNIEnv *env);
 	static struct LocalReferenceHolder LocalReferenceHolder_Setup(const char *func);
 	static void LocalReferenceHolder_Cleanup(struct LocalReferenceHolder *refholder);
@@ -76,4 +77,4 @@ public:
 	int get_power_percent_left();
 };
 
-#endif /* PLATFORM_ANDROID_POWER_ANDROID_H_ */
+#endif // POWER_ANDROID_H