Release 46 - Improved Import

Pools can now be imported as read-only or read-write, overwriting the
stored `readonly` property.
Auto-importing should now work much more reliable, and not try to import
pools that were just exported. The internal cache of previously imported
pools is only removed if at least one primary device of the pool physically
disappears.

ZetaWatch.xcodeproj/project.pbxproj

@@ -851,7 +851,7 @@
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
-				ZETA_VERSION = 45;
+				ZETA_VERSION = 46;
 				ZFS_DIR = "$(PROJECT_DIR)/zfs/zfs";
 			};
 			name = Debug;
@@ -908,7 +908,7 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
-				ZETA_VERSION = 45;
+				ZETA_VERSION = 46;
 				ZFS_DIR = "$(PROJECT_DIR)/zfs/zfs";
 			};
 			name = Release;