Add LoaderShouldIgnoreABI to allow drivers that roll their own ABI checks (i.e. nvidia) to perform the check before ScreenInit.

hw/xfree86/common/xf86Module.h

@@ -209,6 +209,7 @@ void LoaderReqSymLists(const char **, ...);
 void LoaderReqSymbols(const char *, ...);
 int LoaderCheckUnresolved(int);
 void LoaderGetOS(const char **name, int *major, int *minor, int *teeny);
+Bool LoaderShouldIgnoreABI(void);
 int LoaderGetABIVersion(const char *abiclass);
 
 typedef pointer (*ModuleSetupProc)(pointer, pointer, int *, int *);

hw/xfree86/loader/loader.c

@@ -363,6 +363,12 @@ LoaderSetOptions(unsigned long opts)
     LoaderOptions |= opts;
 }
 
+_X_EXPORT Bool
+LoaderShouldIgnoreABI(void)
+{
+    return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0;
+}
+
 _X_EXPORT int
 LoaderGetABIVersion(const char *abiclass)
 {

hw/xfree86/loader/xf86sym.c

@@ -713,6 +713,7 @@ _X_HIDDEN void *xfree86LookupTab[] = {
     SYMFUNC(LoaderListDirs)
     SYMFUNC(LoaderFreeDirList)
     SYMFUNC(LoaderGetOS)
+    SYMFUNC(LoaderShouldIgnoreABI)
     SYMFUNC(LoaderGetABIVersion)
 
 #ifdef XF86DRI