[Pkg-clamav-devel] build time improved on buildds

[Sebastian Andrzej Siewior]

a few buildds used the new parallel option and their build time improved
compared to older builds:

amd64 binet -j4:
- 0.98.1+dfsg-2 Build needed 00:21:25, 1450152k disc space
- new: Build needed 00:09:17, 1446484k disc space

armel antheil -j5:
- 0.98.1+dfsg-2 Build needed 00:53:38, 127944k disc space
- new Build needed 00:11:43, 129332k disc space

mips lucateli -j6:
- Build needed 01:13:01, 130288k disc space
- new Build needed 00:31:27, 130944k disc space

Sebastian