tst_badblocks.c: Update test program to test ext2fs_read_bb_FILE2 and
ext2fs_write_FILE.
write_bb_file.c (ext2fs_write_bb_FILE): New function which writes out
bad blocks list to a file.
read_bb_file.c (ext2fs_read_bb_FILE2): Add new function which changes
the callback function to take two additional arguments; a private
blind pointer supplied by the caller, and pointer to a char *
containing a pointer to the invalid string.
badblocks.c (ext2fs_badblocks_equal): Add new function which returns
true if two badblocks list are equal.
Makefile.in: Remove explicit link of -lc in the shared library. (It
shouldn't be necessary, and is harmful in some cases).
jump.funcs:
dll/jump.funcs: Add new jumptable entries for ext2fs_write_bb_FILE,
ext2fs_read_bb_FILE2, and ext2fs_badblocks_equal.