Switch from libdir to datadir for noarch pc files
Switch from libdir to datadir for noarch pc files

Signed-off-by: Nicolas Chauvet <4ea09192621d02805f41333c23b79bb050a76588@gmail.com>

gfto/bitstream,theambient/bitstream_c,theambient/bitstream_c,kierank/bitstream,kierank/bitstream,gfto/bitstream