aiccu: fix uclibc builds

uClibc defines __GLIBC__ but does not provide res_nquery.

Fixes:
http://autobuild.buildroot.net/results/17248fa7f4deaacdab9bb22a777f51209af11e60/
http://autobuild.buildroot.net/results/bf155246563e2f6c44e18f7ee423305600a68b7e/
http://autobuild.buildroot.net/results/32a8c566604e79bf2de7d7236b49b6ab40b8cefd/
http://autobuild.buildroot.net/results/4093e4679412b50048860299dcfc301927e2cabc/



Signed-off-by: Alex Suykov <alex.suykov@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>