Add support for CIELab, EYCC and CMYK

[szukw000]

Declares three new functions
Calls the three new functions
Collects data for CIELab, sets the color_space for EYCC and CMYK

[mayeut]

@szukw000

Thanks for the PR
A few remarks:

• changing formatting in src/bin/common/color.c makes the diff harder to read (I know this is messy from file to file... Uniformize code syntax  #128)
• same goes for unrelated changes: some opj_malloc changed to op_calloc with no apparent reason making this harder to read.

Now for the functional part,

• CIE lab 'colr' box reading: allocation is not checked. In case header length is not 7 or 35, the buffer contains uninitialized values.
• icc_profile_buf: I don't know if this is the right thing to use this one (it has the advantage of not breaking ABI). Seems to be pretty specific. At least a comment shall be added in openjpeg.h for this member.
• icc_profile_len: This one shall be properly set.

[mayeut]

One more thing,
I suppose you have test data that goes with these changes. It's always a good thing to add tests for new functions. You can open a PR on uclouvain/openjpeg-data with the data & update this PR with corresponding tests.

[szukw000]

@mayeut ,

1. replacing malloc() with calloc() was necessary, because the number of info entries
   may be greater than the number of components: thus info entry values change from
   time to time (100, 15xyz, 32xyz, etc). 'issue414-5C-cdef.jp2' has 6 info entries and
   5 components.

2. I used the icc_profile_buf with icc_profile_len = 0 to avoid ABI change AND to use
   a 'structure' that is otherwise unused. If you want to use icc_profile_len > 0, then
   you must introduce another color_profile value.

3. Yes, I have some test data:

   eci-090-CIELab.jp2
   eci-091-CIELAB.jp2
   issue326-CIELAB.jp2

   img0-CMYK.j2k
   issue205-CMYK.jp2
   issue327-18_1805_a4_1-CMYK.jp2

   issue236-ESYCC-CDEF.jp2

   But I can not open a PR on uclouvain/openjpeg-data with the data & update this PR with
   corresponding tests: I do not know how to do that. GITHUB is a mystery.

winfried

[szukw000]

@mayeut ,

you can download the example files here:

http://home/arcor.de/szukw000/images-for-mayeut.tar.xz

I remove this archive on Oct 31, 2015.

I suppose you have test data that goes with these changes. It's always a good thing to
add tests for new functions. You can open a PR on uclouvain/openjpeg-data with the
data & update this PR with corresponding tests.

I know that there are 2 branches in openjpeg-data:

openjpeg-data/{baseline|input}

each with 2 branches conformance and nonregression.

winfried