add UDUNITS

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
retune UDUNITS-2.1.24.eb as per #167 comments

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
add UDUNITS for various toolchains

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
merge UDUNITS for gnu toolchains

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
synchronize all easyconfigs to be alike

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
homogenize easyconfigs for UDUNITS

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
make Ghent University visible in headers, shuffle order of source* params

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Merge pull request #167 from fgeorgatos/contrib_UDUNITS

add UDUNITS