sysvipc: Add missing symbols to map
libc versioning: Add missing symbols, put rest in DFprivate_1_0

This builds, like the previous attempt, but all executables that pull in
libc segfault when errno is accessed, so libc versioning is not working.
Add a number of missing MLINKS.

However, don't bring back the libm.3 -> ieee.3 one (it was removed
in the recent libm work) because it was kind of silly.
procctl.2: Add missing include.
libm: Add some .Lb sections to manual pages missing it.
lgamma.3: Fix some whitespace issues and remove refs to non-existing funcs.
Makefile_upgrade.inc: Remove formatted manual pages, too.