Move subsurface-core to core and qt-mobile to mobile-widgets

Having subsurface-core as a directory name really messes with
autocomplete and is obviously redundant. Simmilarly, qt-mobile caused an
autocomplete conflict and also was inconsistent with the desktop-widget
name for the directory containing the "other" UI.

And while cleaning up the resulting change in the path name for include
files, I decided to clean up those even more to make them consistent
overall.

This could have been handled in more commits, but since this requires a
make clean before the build, it seemed more sensible to do it all in one.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

core/webservice.h

@@ -0,0 +1,24 @@
+#ifndef WEBSERVICE_H
+#define WEBSERVICE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//extern void webservice_download_dialog(void);
+//extern bool webservice_request_user_xml(const gchar *, gchar **, unsigned int *, unsigned int *);
+extern int divelogde_upload(char *fn, char **error);
+extern unsigned int download_dialog_parse_response(char *xmldata, unsigned int len);
+
+enum {
+	DD_STATUS_OK,
+	DD_STATUS_ERROR_CONNECT,
+	DD_STATUS_ERROR_ID,
+	DD_STATUS_ERROR_PARSE,
+};
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif // WEBSERVICE_H