NEW adds install rules to gnu/linux targets

[jeras]

I rebased the pull request #110 against current master and then fixed whitespace issues.

I am using a Xilinx Zqnq board with Ubuntu 16.04.01.

I also tested the build process (for master with patch) with the next build steps:

git clone https://github.com/.../Ne10.git
cd Ne10/
mkdir build
cd build
cmake -DNE10_LINUX_TARGET_ARCH=armv7 -DGNULINUX_PLATFORM=ON ..
make
cmake -DNE10_LINUX_TARGET_ARCH=armv7 -DGNULINUX_PLATFORM=ON -DNE10_BUILD_SHARED=ON ..
make

And the install process (output listed for review):

# make install
[ 29%] Built target NE10
[ 58%] Built target NE10_shared
[ 87%] Built target NE10_test
[ 88%] Built target NE10_test_dynamic
[ 89%] Built target NE10_test_static
[ 93%] Built target NE10_dsp_unit_test_static
[ 95%] Built target NE10_physics_unit_test_static
[ 97%] Built target NE10_math_unit_test_static
[100%] Built target NE10_imgproc_unit_test_static
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/lib/pkgconfig/ne10.pc
-- Installing: /usr/local/include/ne10
-- Installing: /usr/local/include/ne10/NE10_init.h
-- Installing: /usr/local/include/ne10/NE10_math.h
-- Installing: /usr/local/include/ne10/NE10_dsp.h
-- Installing: /usr/local/include/ne10/NE10_imgproc.h
-- Installing: /usr/local/include/ne10/NE10.h
-- Installing: /usr/local/include/ne10/NE10_types.h
-- Installing: /usr/local/include/ne10/NE10_physics.h
-- Installing: /usr/local/include/ne10/NE10_macros.h
-- Up-to-date: /usr/local/include/ne10
-- Installing: /usr/local/include/ne10/NE10_mask_table.h
-- Installing: /usr/local/include/ne10/versionheader.h
-- Installing: /usr/local/include/ne10/factor.h
-- Installing: /usr/local/include/ne10/macros.h
-- Installing: /usr/local/include/ne10/dsp
-- Installing: /usr/local/include/ne10/dsp/NE10_fft_generic_float32.h
-- Installing: /usr/local/include/ne10/dsp/NE10_fft_cplx_ops.h
-- Installing: /usr/local/include/ne10/dsp/test
-- Installing: /usr/local/include/ne10/dsp/NE10_fft.neonintrinsic.h
-- Installing: /usr/local/include/ne10/dsp/NE10_fft_generic_int32.neonintrinsic.h
-- Installing: /usr/local/include/ne10/dsp/NE10_fft_bfly.h
-- Installing: /usr/local/include/ne10/dsp/NE10_fft_common_varibles.h
-- Installing: /usr/local/include/ne10/dsp/NE10_fft_generic_int32.h
-- Installing: /usr/local/include/ne10/dsp/NE10_fft_debug_macro.h
-- Installing: /usr/local/include/ne10/dsp/NE10_fft.h
-- Installing: /usr/local/include/ne10/math
-- Installing: /usr/local/include/ne10/math/test
-- Installing: /usr/local/include/ne10/math/NE10_detmat.c.h
-- Installing: /usr/local/include/ne10/imgproc
-- Installing: /usr/local/include/ne10/imgproc/test
-- Installing: /usr/local/include/ne10/physics
-- Installing: /usr/local/include/ne10/physics/test
-- Installing: /usr/local/lib/libNE10.a
-- Installing: /usr/local/lib/libNE10.so.10
-- Installing: /usr/local/lib/libNE10.so