Rename the internal rpmpgp.h header to rpmpgpval.h for clarity

Commit d8bb57e reintroduced
rpmio/rpmpgp.h which is quite confusing when we have a public header by
the same name elsewhere, and doubly more confusing to those of use who
are used to having the public header by the same name in this very
location prior to commit 650ba79.

No functional changes.

(cherry picked from commit 547acb6)

rpmio/Makefile.am

@@ -20,7 +20,7 @@ usrlib_LTLIBRARIES = librpmio.la
 librpmio_la_SOURCES = \
 	argv.c base64.c digest.h digest.c expression.c macro.c \
 	rpmhook.c rpmio.c rpmlog.c rpmmalloc.c rgetopt.c \
-	rpmpgp.c rpmpgp.h rpmsq.c rpmsw.c url.c \
+	rpmpgp.c rpmpgpval.h rpmsq.c rpmsw.c url.c \
 	rpmio_internal.h rpmhook.h rpmvercmp.c rpmver.c \
 	rpmstring.c rpmfileutil.c rpmglob.c \
 	rpmkeyring.c rpmstrpool.c rpmmacro_internal.h \

rpmio/rpmpgp.c

@@ -11,7 +11,7 @@
 #include <rpm/rpmlog.h>
 
 #include "rpmio/digest.h"
-#include "rpmio/rpmpgp.h"
+#include "rpmio/rpmpgpval.h"
 #include "rpmio/rpmio_internal.h"	/* XXX rpmioSlurp */
 
 #include "debug.h"

rpmio/rpmpgp_internal.c

@@ -12,7 +12,7 @@
 #include <rpm/rpmbase64.h>
 
 #include "rpmio/digest.h"
-#include "rpmio/rpmpgp.h"
+#include "rpmio/rpmpgpval.h"
 #include "rpmio/rpmio_internal.h"	/* XXX rpmioSlurp */
 
 #include "debug.h"