e2image.c, mke2fs.c, mklost+found.c, tune2fs.c, util.c, uuidgen.c: Fix
gcc -Wall complaints, including one bug in tune2fs caused by a block
automatic shadowing version of the variable we really wanted to use,
which broke the logic testing to see if the filesystem was mounted.
ChangeLog, MCONFIG.in:
(gcc-wall-new): Added new target which forgoes the make clean so we
only check the newly modified .c files.
tune2fs.c (update_feature_set, add_journal): Moved to separate
functions. Added ability to add and remove the journal while the
filesystem is live. Added support for setting a time-based UUID.
Removed zero-initialized static variables.
mke2fs.c, util.c, util.h (strcasecmp, proceed_question,
check_plausibility, parse_journal_opts, check_mount): Moved functions
to util.c so they can be used by tune2fs.
mke2fs.c (main): Change ext2fs_add_journal_fs() to
ext2fs_add_journal_inode() to reflect function renaming.
Theodore Ts'o