- Update to 0.5.1
security/libssh2:
- Convert to USES=libtool and USES=pathfix
- Add INSTALL_TARGET=install-strip
- Only depend on openssl if GCRYPT option is off
- Sanitize libssh2.pc

devel/libvirt:
- Remove workaround for broken libssh2.pc
- Add USES=libtool and bump dependent ports
- Convert to INSTALL_TARGET=install-strip

devel/libvirt-glib:
- Convert to USES=libtool

Approved by:	portmgr (implicit, bump unstaged port)
- In www/serf move libssl and libcrypto from Requires.private to
  Libs.private in serf-1.pc such that subversion-static can use
  "pkg-config --static" instead of requiring a .la file
- Remove an old libtool patch from devel/subversion

Approved by:	ohauer
Update to iperf3 3.0.7.

Approved by:	mat (mentor)
Sponsored by:	ESnet