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, 8 insertions, 8 deletions

diff --git a/os/auth.c b/os/auth.c
index 4a67b37be..a852e1c3b 100644
--- a/os/auth.c
+++ b/os/auth.c
@@ -100,7 +100,7 @@ static char *authorization_file = (char *)NULL;
 
 static Bool ShouldLoadAuth = TRUE;
 
-_X_EXPORT void
+void
 InitAuthorization (char *file_name)
 {
     authorization_file = file_name;
@@ -145,7 +145,7 @@ LoadAuthorization (void)
  * XdmcpInit calls this function to discover all authorization
  * schemes supported by the display
  */
-_X_EXPORT void
+void
 RegisterAuthorizations (void)
 {
     int	    i;
@@ -156,7 +156,7 @@ RegisterAuthorizations (void)
 }
 #endif
 
-_X_EXPORT XID
+XID
 CheckAuthorization (
     unsigned int name_length,
     char	*name,
@@ -221,7 +221,7 @@ CheckAuthorization (
     return (XID) ~0L;
 }
 
-_X_EXPORT void
+void
 ResetAuthorization (void)
 {
     int	i;
@@ -232,7 +232,7 @@ ResetAuthorization (void)
     ShouldLoadAuth = TRUE;
 }
 
-_X_EXPORT int
+int
 AuthorizationFromID (
 	XID 		id,
 	unsigned short	*name_lenp,
@@ -253,7 +253,7 @@ AuthorizationFromID (
     return 0;
 }
 
-_X_EXPORT int
+int
 RemoveAuthorization (
 	unsigned short	name_length,
 	char		*name,
@@ -273,7 +273,7 @@ RemoveAuthorization (
     return 0;
 }
 
-_X_EXPORT int
+int
 AddAuthorization (unsigned name_length, char *name, unsigned data_length, char *data)
 {
     int	i;
@@ -291,7 +291,7 @@ AddAuthorization (unsigned name_length, char *name, unsigned data_length, char *
 
 #ifdef XCSECURITY
 
-_X_EXPORT XID
+XID
 GenerateAuthorization(
 	unsigned name_length,
 	char	*name,