- compress docs: if man link is in other section than current, we need to preserve...

- compress docs: if man link is in other section than current, we need to preserve subdirs in .so link:
# man drm-device-added
fopen: No such file or directory
Cannot open man page /usr/share/man/man7/upstart-udev-bridge.8.gz
No manual entry for drm-device-added
# cat /usr/share/man/man7/drm-device-added.7
.so upstart-udev-bridge.8

this fix works with relative links in same dir and symlinks with full path,
relative symlinks likely break.

Changed files:
    rpm.macros -> 1.614