build: ignore builddata.c when hashing sources
build: ignore builddata.c when hashing sources

Not ignoring it is actually incorrect; it contains generated
meta-data about the sources.

If we don't ignore it then the hash will be different every time
for the same source tree.

Signed-off-by: Ferry Huberts <66e11f9f5d965b69497c7e73d5e808f8b13c1218@pelagic.nl>

nolith/olsrd,zioproto/olsrd,cholin/olsrd,tdz/olsrd,ninuxorg/olsrd,zioproto/olsrd,sebkur/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd,diogomg/olsrd-binary-heap,nolith/olsrd,cholin/olsrd,sebkur/olsrd,ninuxorg/olsrd,cholin/olsrd,sebkur/olsrd,nolith/olsrd,nolith/olsrd,ninuxorg/olsrd,zioproto/olsrd,diogomg/olsrd-binary-heap,zioproto/olsrd,nolith/olsrd,diogomg/olsrd,ninuxorg/olsrd,cholin/olsrd,tdz/olsrd,cholin/olsrd,sebkur/olsrd,sebkur/olsrd,diogomg/olsrd,tdz/olsrd,tdz/olsrd,tdz/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd,diogomg/olsrd,diogomg/olsrd,diogomg/olsrd-binary-heap,zioproto/olsrd,diogomg/olsrd-binary-heap,ninuxorg/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd,sebkur/olsrd