TWRP-ify AOSP code

Pull in most TWRP sources
Stub out partition management code
Make it compile -- probably will not boot
Kind of a mess but have to start somewhere
diff --git a/crypto/fs_mgr/fs_mgr_priv.h b/crypto/fs_mgr/fs_mgr_priv.h
new file mode 100644
index 0000000..175fdab
--- /dev/null
+++ b/crypto/fs_mgr/fs_mgr_priv.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CORE_FS_MGR_PRIV_H
+#define __CORE_FS_MGR_PRIV_H
+
+#include <cutils/klog.h>
+#include <fs_mgr.h>
+
+#define INFO(x...)    KLOG_INFO("fs_mgr", x)
+#define ERROR(x...)   KLOG_ERROR("fs_mgr", x)
+
+#define CRYPTO_TMPFS_OPTIONS "size=128m,mode=0771,uid=1000,gid=1000"
+
+struct fstab_rec {
+    char *blk_dev;
+    char *mnt_point;
+    char *type;
+    unsigned long flags;
+    char *fs_options;
+    int fs_mgr_flags;
+    char *key_loc;
+};
+
+#define WAIT_TIMEOUT 5
+
+/* fstab has the following format:
+ *
+ * Any line starting with a # is a comment and ignored
+ *
+ * Any blank line is ignored
+ *
+ * All other lines must be in this format:
+ *   <source>  <mount_point> <fs_type> <mount_flags> <fs_options> <fs_mgr_options>
+ *
+ *   <mount_flags> is a comma separated list of flags that can be passed to the
+ *                 mount command.  The list includes noatime, nosuid, nodev, nodiratime,
+ *                 ro, rw, remount, defaults.
+ *
+ *   <fs_options> is a comma separated list of options accepted by the filesystem being
+ *                mounted.  It is passed directly to mount without being parsed
+ *
+ *   <fs_mgr_options> is a comma separated list of flags that control the operation of
+ *                     the fs_mgr program.  The list includes "wait", which will wait till
+ *                     the <source> file exists, and "check", which requests that the fs_mgr 
+ *                     run an fscheck program on the <source> before mounting the filesystem.
+ *                     If check is specifed on a read-only filesystem, it is ignored.
+ *                     Also, "encryptable" means that filesystem can be encrypted.
+ *                     The "encryptable" flag _MUST_ be followed by a : and a string which
+ *                     is the location of the encryption keys.  I can either be a path
+ *                     to a file or partition which contains the keys, or the word "footer"
+ *                     which means the keys are in the last 16 Kbytes of the partition
+ *                     containing the filesystem.
+ *
+ * When the fs_mgr is requested to mount all filesystems, it will first mount all the
+ * filesystems that do _NOT_ specify check (including filesystems that are read-only and
+ * specify check, because check is ignored in that case) and then it will check and mount
+ * filesystem marked with check.
+ *
+ */
+
+#define MF_WAIT      0x1
+#define MF_CHECK     0x2
+#define MF_CRYPT     0x4
+
+#endif /* __CORE_FS_MGR_PRIV_H */
+