Run "/usr/sbin/service ldconfig restart" for USE_LDCONFIG instead of
"ldconfig -m <path>" so the order of ldconfig search directories after
package installation is the same as after a reboot. The original command
simply appends the path to the list of directories while the ldconfig rc.d
script uses "sort -u".

Bump lang/gcc* which are known to install libraries with exactly the same
name so the library loaded at runtime depends on the order of the search
directories.

PR: 228046
Approved by: portmgr (antoine)