Move virStorage{Pool,Vol} related APIs out of libvirt.c

Introduce a src/libvirt-storage.c file to hold all the
methods related to the virStorage{Pool,Vol} types.

docs/apibuild.py

@@ -30,6 +30,7 @@ included_files = {
   "libvirt-nodedev.c": "Node device interfaces for the libvirt library",
   "libvirt-nwfilter.c": "NWFilter interfaces for the libvirt library",
   "libvirt-secret.c": "Secret interfaces for the libvirt library",
+  "libvirt-storage.c": "Storage interfaces for the libvirt library",
   "libvirt-stream.c": "Stream interfaces for the libvirt library",
   "virerror.c": "implements error handling and reporting code for libvirt",
   "virevent.c": "event loop for monitoring file handles",

po/POTFILES.in

@@ -62,6 +62,7 @@ src/libvirt-lxc.c
 src/libvirt-network.c
 src/libvirt-nwfilter.c
 src/libvirt-secret.c
+src/libvirt-storage.c
 src/libvirt-stream.c
 src/libvirt-qemu.c
 src/locking/lock_daemon.c

src/Makefile.am

@@ -195,6 +195,7 @@ DRIVER_SOURCES =							\
 		libvirt-nodedev.c	 				\
 		libvirt-nwfilter.c	 				\
 		libvirt-secret.c	 				\
+		libvirt-storage.c	 				\
 		libvirt-stream.c	 				\
 		locking/lock_manager.c locking/lock_manager.h		\
 		locking/lock_driver.h					\
@@ -2199,6 +2200,7 @@ libvirt_setuid_rpc_client_la_SOURCES = 		\
 		libvirt-nodedev.c		\
 		libvirt-nwfilter.c		\
 		libvirt-secret.c		\
+		libvirt-storage.c		\
 		libvirt-stream.c		\
 		libvirt-lxc.c			\
 		$(NULL)