Merge remote-tracking branch 'origin/fastpath'

* origin/fastpath:
  FindGooglePerftools now uses combined tcmalloc/cpu profiler library (fixes #689)
Fix InstallClobberImmune.cmake to respect DESTDIR.
Fix InstallClobberImmune script to prepend DESTDIR to install prefix.
Update InstallSymlink.cmake to respect DESTDIR.
Merge remote-tracking branch 'origin/topic/jsiwek/destdir-fix'

* origin/topic/jsiwek/destdir-fix:
  Update InstallSymlink.cmake to respect DESTDIR.
  Fix InstallClobberImmune script to prepend DESTDIR to install prefix.
  Fix InstallClobberImmune.cmake to respect DESTDIR.

Closes #798.
Perftools code now exports libraries for both better performance and
heap debugging.

    GooglePerftools_LIBRARIES          The GooglePerftools libraries
    GooglePerftools_LIBRARIES_DEBUG    The GooglePerftools libraries for heap checking.
cmake magic to find DataSeries.

From topic/gilbert/logging.
Merge remote-tracking branch 'origin/topic/robin/log-threads'

* origin/topic/robin/log-threads:
  Perftools code now exports libraries for both better performance and heap debugging.
Add more configure-time checks for IPv6-related definitions.
Merge remote-tracking branch 'origin/topic/jsiwek/ipv6-configure-checks'

* origin/topic/jsiwek/ipv6-configure-checks:
  Add more configure-time checks for IPv6-related definitions.
Merge remote-tracking branch 'origin/master' into topic/robin/dataseries
Merge remote-tracking branch 'origin/topic/robin/dataseries'

* origin/topic/robin/dataseries:
  cmake magic to find DataSeries.
Add a check for IPPROTO_IPV4 definition.
Merge remote-tracking branch 'origin/topic/tunnels'

* origin/topic/tunnels:
  Add a check for IPPROTO_IPV4 definition.
Fix an issue with lack of string quoting in custom install script.

This caused an error when making the install target for environments
without a USER variable.
Merge remote-tracking branch 'origin/topic/jsiwek/fix-quoting'

* origin/topic/jsiwek/fix-quoting:
  Fix an issue with lack of string quoting in custom install script.
Add script to locate libcurl installation, addresses #877.

The CMake distribution does come with one by default, but this one
is easier to control search locations by giving an install root
as input.
Merge remote-tracking branch 'origin/topic/jsiwek/findlibcurl'

* origin/topic/jsiwek/findlibcurl:
  Add script to locate libcurl installation, addresses #877.
Adding a readline package finder.
s/bro-ids.org/bro.org/g

Also changing LBNL to ICSI as package vendor.