add a breaks libapt-inst for FileFd changes in 0.9.9

Partial upgrades…

The fix for 704608 assumes that bf35c19b817cc1474b3deabce0b0953c248bad42
was applied to libapt-inst which isn't the case for partial upgrades of
course, so break it to ensure that it is the case.

Closes: 720449
add versions to manpages-it Replaces+Breaks

In the meantime the package was updated to remove the old APT manpages
from this package, so we can now add a Breaks and version it, too.

The intial Replaces was added in:
b57220d815aedbc023847d0885e08c6ed50e629a
fix compiler warning about sign-compare

This fix avoids the warning "comparison between signed and unsigned
integer expressions [-Wsign-compare]". The index for the loop
needs to be unsigned for compare with globbuf.gl_pathc structure
member.