Patch merged into coreboot/master: 3cfacbf cbfstool: Add buffer management API.

the following patch was just integrated into master:
commit 3cfacbf1961accff8670997368b403d8068ad94c
Author: Hung-Te Lin 
Date:   Wed Jan 30 00:43:46 2013 +0800

cbfstool: Add buffer management API.

Many functions in cbfstool need to deal with a memory buffer - both location and
    size. Right now it's made by different ways: for ROM image using global variable
    (romsize, master_header); and in cbfs-* using return value for size and char**
    to return memory location.

This may cause bugs like assuming incorrect return types, ex:
    	uint32_t file_size = parse();	// which returns "-1" on error
    	if (file_size <= 0) { ...
    And the parse error will never be caught.

We can simplify this by introducing a buffer API, to change
    	unsigned int do_something(char *input, size_t len, char **output, ...)
    into
    	int do_something(struct buffer *input, struct buffer *output, ...)

The buffer API will be used by further commits.

Change-Id: Iaddaeb109f08be6be84c6728d72c6a043b0e7a9f
    Signed-off-by: Hung-Te Lin 
    Reviewed-on: http://review.coreboot.org/2205
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

Build-Tested: build bot (Jenkins) at Mon Feb  4 23:18:18 2013, giving +1
Reviewed-By: Stefan Reinauer  at Tue Feb  5 22:24:45 2013, giving +2
See http://review.coreboot.org/2205 for details.

-gerrit