Replace rpm2cpio by rpm2archive entirely

Now that rpm2archive knows how to impersonate rpm2cpio when called by
that name, we can just drop the latter entirely. The one notable
behavior change is src.rpm contents now getting ./ prepended to the
paths. We could fixup for that too, but there's doesn't seem to be
any reason to bother.

It's crucial that we start steering people away from rpm2cpio because it
wont be able to deal with v6 content. cpio is obsolete even in POSIX now.

tests/rpmgeneral.at

@@ -341,8 +341,8 @@ RPMTEST_CHECK([
 runroot_other rpm2cpio /data/SRPMS/hello-1.0-1.src.rpm | cpio -t --quiet
 ],
 [0],
-[hello-1.0.tar.gz
-hello.spec
+[./hello-1.0.tar.gz
+./hello.spec
 ],
 [])
 RPMTEST_CLEANUP

tools/CMakeLists.txt

@@ -3,7 +3,6 @@ add_library(cliutils OBJECT cliutils.c cliutils.h)
 add_executable(rpm rpm.c cliutils)
 add_executable(rpmdb rpmdb.c cliutils)
 add_executable(rpmkeys rpmkeys.c cliutils)
-add_executable(rpm2cpio rpm2cpio.c cliutils)
 add_executable(rpmsign rpmsign.c cliutils)
 add_executable(rpmbuild rpmbuild.c cliutils)
 add_executable(rpmspec rpmspec.c cliutils)
@@ -48,8 +47,15 @@ foreach(cmd rpmverify rpmquery)
 			BYPRODUCTS ${cmd})
 	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${cmd} TYPE BIN)
 endforeach()
+if (WITH_ARCHIVE)
+	add_custom_target(rpm2cpio ALL COMMAND
+			${CMAKE_COMMAND} -E create_symlink rpm2archive rpm2cpio
+			BYPRODUCTS rpm2cpio)
+	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/rpm2cpio TYPE BIN)
+endif()
+
 install(TARGETS
-	rpm rpmdb rpmkeys rpm2cpio rpmsign rpmbuild rpmspec
+	rpm rpmdb rpmkeys rpmsign rpmbuild rpmspec
 	rpmlua rpmgraph rpmsort
 )
 install(TARGETS elfdeps rpmdeps rpmuncompress DESTINATION ${RPM_CONFIGDIR})