Rework symbol visibility for easier maintenance

  Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.

  This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)

  LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.

  xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).

1 files changed, 22 insertions, 22 deletions

diff --git a/include/dixevents.h b/include/dixevents.h
index 1ce2ad0c1..b9153456f 100644
--- a/include/dixevents.h
+++ b/include/dixevents.h
@@ -26,62 +26,62 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #ifndef DIXEVENTS_H
 #define DIXEVENTS_H
 
-extern void SetCriticalEvent(int /* event */);
+extern _X_EXPORT void SetCriticalEvent(int /* event */);
 
-extern CursorPtr GetSpriteCursor(DeviceIntPtr /*pDev*/);
+extern _X_EXPORT CursorPtr GetSpriteCursor(DeviceIntPtr /*pDev*/);
 
-extern int ProcAllowEvents(ClientPtr /* client */);
+extern _X_EXPORT int ProcAllowEvents(ClientPtr /* client */);
 
-extern int MaybeDeliverEventsToClient(
+extern _X_EXPORT int MaybeDeliverEventsToClient(
 	WindowPtr              /* pWin */,
 	xEvent *               /* pEvents */,
 	int                    /* count */,
 	Mask                   /* filter */,
 	ClientPtr              /* dontClient */);
 
-extern int ProcWarpPointer(ClientPtr /* client */);
+extern _X_EXPORT int ProcWarpPointer(ClientPtr /* client */);
 
-extern int EventSelectForWindow(
+extern _X_EXPORT int EventSelectForWindow(
 	WindowPtr              /* pWin */,
 	ClientPtr              /* client */,
 	Mask                   /* mask */);
 
-extern int EventSuppressForWindow(
+extern _X_EXPORT int EventSuppressForWindow(
 	WindowPtr              /* pWin */,
 	ClientPtr              /* client */,
 	Mask                   /* mask */,
 	Bool *                 /* checkOptional */);
 
-extern int ProcSetInputFocus(ClientPtr /* client */);
+extern _X_EXPORT int ProcSetInputFocus(ClientPtr /* client */);
 
-extern int ProcGetInputFocus(ClientPtr /* client */);
+extern _X_EXPORT int ProcGetInputFocus(ClientPtr /* client */);
 
-extern int ProcGrabPointer(ClientPtr /* client */);
+extern _X_EXPORT int ProcGrabPointer(ClientPtr /* client */);
 
-extern int ProcChangeActivePointerGrab(ClientPtr /* client */);
+extern _X_EXPORT int ProcChangeActivePointerGrab(ClientPtr /* client */);
 
-extern int ProcUngrabPointer(ClientPtr /* client */);
+extern _X_EXPORT int ProcUngrabPointer(ClientPtr /* client */);
 
-extern int ProcGrabKeyboard(ClientPtr /* client */);
+extern _X_EXPORT int ProcGrabKeyboard(ClientPtr /* client */);
 
-extern int ProcUngrabKeyboard(ClientPtr /* client */);
+extern _X_EXPORT int ProcUngrabKeyboard(ClientPtr /* client */);
 
-extern int ProcQueryPointer(ClientPtr /* client */);
+extern _X_EXPORT int ProcQueryPointer(ClientPtr /* client */);
 
-extern int ProcSendEvent(ClientPtr /* client */);
+extern _X_EXPORT int ProcSendEvent(ClientPtr /* client */);
 
-extern int ProcUngrabKey(ClientPtr /* client */);
+extern _X_EXPORT int ProcUngrabKey(ClientPtr /* client */);
 
-extern int ProcGrabKey(ClientPtr /* client */);
+extern _X_EXPORT int ProcGrabKey(ClientPtr /* client */);
 
-extern int ProcGrabButton(ClientPtr /* client */);
+extern _X_EXPORT int ProcGrabButton(ClientPtr /* client */);
 
-extern int ProcUngrabButton(ClientPtr /* client */);
+extern _X_EXPORT int ProcUngrabButton(ClientPtr /* client */);
 
-extern int ProcRecolorCursor(ClientPtr /* client */);
+extern _X_EXPORT int ProcRecolorCursor(ClientPtr /* client */);
 
 #ifdef PANORAMIX
-extern void PostSyntheticMotion(DeviceIntPtr pDev, 
+extern _X_EXPORT void PostSyntheticMotion(DeviceIntPtr pDev,
                                 int x, 
                                 int y, 
                                 int screen,