Smatch 1.57 released

Smatch is a C static analysis tool, but with a lot of kernel
specific checks.  It's been 8 months since I did a Smatch release so
probably another one was due.

The main interesting thing right now is the value tracking across
function boundaries with the database.  But also there was a some
work done with array out of bounds detection.  And internally there
was a fix so it should run faster and use less memory.  Along with
lots of other small fixes.

The way to use Smatch is:
	git clone git://repo.or.cz/smatch.git
	cd smatch
	make
	cd ~/path/to/kernel

	[ This next step is optional if you want to build the
	  database.  If you build it several times the database
	  becomes more complete. ]
	~/path/to/smatch/smatch_scripts/build_kernel_data.sh

	~/path/to/smatch/smatch_scripts/test_kernel.sh

It creates warns.txt file with all the warnings.  Or alternatively
if you just want to check one file then the command is:

	~/progs/smatch/devel/smatch_scripts/kchecker drivers/file.c

regards,
dan carpenter
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