Modify android_filesystem_config.h and add a capabilities
field. This field can be used to add filesystem capabilities
to a particular file.
Change-Id: If8953a322457ea7275aa6df75660b714e6dc678a
mkbootfs uses the compiled in fs_config() function to set the mode
(but not the uid or gid) of the files in the filesystem it is
building. Give it an optional "-f filename" flag to allow loading the
list of file permissions from a file, so we can continue to accurately
recreate old filesystems even when the current fs_config() has changed.
Bug: 6435132
Change-Id: Ife6b25e989301e78e22c34a544738436c96caf6f
