add mode-line of emacs to activate makefile major mode

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
add FUZZ_LANGUAGE option to testing.mak

fuzz target dealt with all parsers, therefore it takes long time.
This optoin is helpful if you want to run the fuzz-test for a specified
parser.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
add FUZZ_SRC_DIRS option to fuzz target of testing.mak

Files under the directories enumerated with FUZZ_SRC_DIRS
are used as input for fuzz target.

e.g.

	$ make -f testing.mak FUZZ_SRC_DIRS=/usr/src/debug

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
print the current fuzz-tested language

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Merge pull request #47 from masatake/fuzz-test-xdir

add option parameter for adding extra input directories for fuzz-testing