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`

5 files changed, 13 insertions, 11 deletions

diff --git a/platform/iphone/SCsub b/platform/iphone/SCsub
index d5540fe8db..41991bce86 100644
--- a/platform/iphone/SCsub
+++ b/platform/iphone/SCsub
@@ -7,7 +7,7 @@ import os
 iphone_lib = [
     'godot_iphone.cpp',
     'os_iphone.cpp',
-    'sem_iphone.cpp',
+    'semaphore_iphone.cpp',
     'gl_view.mm',
     'main.m',
     'app_delegate.mm',
diff --git a/platform/iphone/os_iphone.cpp b/platform/iphone/os_iphone.cpp
index 16634c3b30..c939e234b9 100644
--- a/platform/iphone/os_iphone.cpp
+++ b/platform/iphone/os_iphone.cpp
@@ -45,9 +45,10 @@
 #include "core/project_settings.h"
 #include "drivers/unix/syslog_logger.h"
 
-#include "sem_iphone.h"
+#include "semaphore_iphone.h"
 
 #include "ios.h"
+
 #include <dlfcn.h>
 
 int OSIPhone::get_video_driver_count() const {
diff --git a/platform/iphone/power_iphone.h b/platform/iphone/power_iphone.h
index eb930b99c5..d7d4bf4a69 100644
--- a/platform/iphone/power_iphone.h
+++ b/platform/iphone/power_iphone.h
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef PLATFORM_IPHONE_POWER_IPHONE_H_
-#define PLATFORM_IPHONE_POWER_IPHONE_H_
+#ifndef POWER_IPHONE_H
+#define POWER_IPHONE_H
 
 #include <os/os.h>
 
@@ -50,4 +50,4 @@ public:
 	int get_power_percent_left();
 };
 
-#endif /* PLATFORM_IPHONE_POWER_IPHONE_H_ */
+#endif // POWER_IPHONE_H
diff --git a/platform/iphone/sem_iphone.cpp b/platform/iphone/semaphore_iphone.cpp
index 05cdb6a2f7..cc7dde72f7 100644
--- a/platform/iphone/sem_iphone.cpp
+++ b/platform/iphone/semaphore_iphone.cpp
@@ -1,5 +1,5 @@
 /*************************************************************************/
-/*  sem_iphone.cpp                                                       */
+/*  semaphore_iphone.cpp                                                 */
 /*************************************************************************/
 /*                       This file is part of:                           */
 /*                           GODOT ENGINE                                */
@@ -28,7 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#include "sem_iphone.h"
+#include "semaphore_iphone.h"
 
 #include <fcntl.h>
 #include <unistd.h>
@@ -71,6 +71,7 @@ void cgsem_destroy(cgsem_t *cgsem) {
 }
 
 #include "core/os/memory.h"
+
 #include <errno.h>
 
 Error SemaphoreIphone::wait() {
diff --git a/platform/iphone/sem_iphone.h b/platform/iphone/semaphore_iphone.h
index 134bc723d9..16658384e6 100644
--- a/platform/iphone/sem_iphone.h
+++ b/platform/iphone/semaphore_iphone.h
@@ -1,5 +1,5 @@
 /*************************************************************************/
-/*  sem_iphone.h                                                         */
+/*  semaphore_iphone.h                                                   */
 /*************************************************************************/
 /*                       This file is part of:                           */
 /*                           GODOT ENGINE                                */
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef SEM_IPHONE_H
-#define SEM_IPHONE_H
+#ifndef SEMAPHORE_IPHONE_H
+#define SEMAPHORE_IPHONE_H
 
 struct cgsem {
 	int pipefd[2];
@@ -56,4 +56,4 @@ public:
 	~SemaphoreIphone();
 };
 
-#endif
+#endif // SEMAPHORE_IPHONE_H