replace with GNU_SOURCE where needed, round #1

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
replace with GNU_SOURCE where needed, round #2

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
replace with GNU_SOURCE where needed, round #3

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
no more conflicts here

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Cython w. PYPI now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Greenlet w. PYPI_LOWER_SOURCE now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
HTSeq w. PYPI_SOURCE now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Jinja2 w. PYPI_SOURCE now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
PyZMQ w. PYPI_SOURCE now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
pandas & pysqlite w. PYPI_SOURCE now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Shapely, Sphinx, scikit-learn w. PYPI_SOURCE now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Theano w. PYPI_SOURCE now

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
now use XORG_LIB_SOURCE everywhere needed

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
do not touch libreadline, good as-is

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
libreadline needed a bugfix, now should be ready

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Merge pull request #615 from fgeorgatos/adjust_gnu.org_tools

Adjust gnu.org tools