lib: Drop internal virXXXPtr typedefs

Historically, we declared pointer type to our types:

  typedef struct _virXXX virXXX;
  typedef virXXX *virXXXPtr;

But usefulness of such declaration is questionable, at best.
Unfortunately, we can't drop every such declaration - we have to
carry some over, because they are part of public API (e.g.
virDomainPtr). But for internal types - we can do drop them and
use what every other C project uses 'virXXX *'.

This change was generated by a very ugly shell script that
generated sed script which was then called over each file in the
repository. For the shell script refer to the cover letter:

https://listman.redhat.com/archives/libvir-list/2021-March/msg00537.html

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

tests/viruritest.c

@@ -41,13 +41,13 @@ struct URIParseData {
     const char *query;
     const char *fragment;
     const char *user;
-    virURIParamPtr params;
+    virURIParam *params;
 };
 
 static int testURIParse(const void *args)
 {
     int ret = -1;
-    virURIPtr uri = NULL;
+    virURI *uri = NULL;
     const struct URIParseData *data = args;
     char *uristr = NULL;
     size_t i;