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, 10 insertions, 10 deletions

diff --git a/os/io.c b/os/io.c
index e902ee520..68f9bf0b1 100644
--- a/os/io.c
+++ b/os/io.c
@@ -82,8 +82,8 @@ SOFTWARE.
 #include "dixstruct.h"
 #include "misc.h"
 
-_X_EXPORT CallbackListPtr       ReplyCallback;
-_X_EXPORT CallbackListPtr       FlushCallback;
+CallbackListPtr       ReplyCallback;
+CallbackListPtr       FlushCallback;
 
 static ConnectionInputPtr AllocateInputBuffer(void);
 static ConnectionOutputPtr AllocateOutputBuffer(void);
@@ -191,7 +191,7 @@ YieldControlDeath(void)
     timesThisConnection = 0;
 }
 
-_X_EXPORT int
+int
 ReadRequestFromClient(ClientPtr client)
 {
     OsCommPtr oc = (OsCommPtr)client->osPrivate;
@@ -465,7 +465,7 @@ ReadRequestFromClient(ClientPtr client)
  *
  **********************/
 
-_X_EXPORT Bool
+Bool
 InsertFakeRequest(ClientPtr client, char *data, int count)
 {
     OsCommPtr oc = (OsCommPtr)client->osPrivate;
@@ -539,7 +539,7 @@ InsertFakeRequest(ClientPtr client, char *data, int count)
  *
  **********************/
 
-_X_EXPORT void
+void
 ResetCurrentRequest(ClientPtr client)
 {
     OsCommPtr oc = (OsCommPtr)client->osPrivate;
@@ -599,7 +599,7 @@ static const int padlength[4] = {0, 3, 2, 1};
  *
  **********************/
 
-_X_EXPORT void
+void
 FlushAllOutput(void)
 {
     register int index, base;
@@ -672,14 +672,14 @@ FlushAllOutput(void)
 #endif /* WIN32 */
 }
 
-_X_EXPORT void
+void
 FlushIfCriticalOutputPending(void)
 {
     if (CriticalOutputPending)
 	FlushAllOutput();
 }
 
-_X_EXPORT void
+void
 SetCriticalOutputPending(void)
 {
     CriticalOutputPending = TRUE;
@@ -696,7 +696,7 @@ SetCriticalOutputPending(void)
  *    this routine as int.
  *****************/
 
-_X_EXPORT int
+int
 WriteToClient (ClientPtr who, int count, const void *__buf)
 {
     OsCommPtr oc = (OsCommPtr)who->osPrivate;
@@ -1087,7 +1087,7 @@ FreeOsBuffers(OsCommPtr oc)
     }
 }
 
-_X_EXPORT void
+void
 ResetOsBuffers(void)
 {
     ConnectionInputPtr oci;