Add NEWS about new features of broctl and upgrade info
Add more script package README files

The text from these README files appears on the "Bro Script Packages"
page after building the documentation.
Change test of identify_data BIF to ignore charset.

It may vary with libmagic version.
Add gawk to list of optional packages

BSD and debian-based Linux do not include gawk by default.  Noticed
that a test was failing on these platforms due to the use of a bro-cut
option that requires gawk.
temporary osx mavericks libc++ issue workaround.

When using clang3.3 on mavericks with libc++, after the
first std::getline-call encountered eof on an ifstream,
all following std::getline calls on the same ifstream will
also get eof, even if ifstream::clear has been called and
the file has been appended in the meantime.

Seeking to the current position after a clear before trying
to read the line fixes this behavior.

This is just a temporary workaround...
Merge remote-tracking branch 'origin/fastpath'

* origin/fastpath:
  temporary osx mavericks libc++ issue workaround.
  Change test of identify_data BIF to ignore charset.
rework libc++ patch to use AvailabilityMacros.h instead of Availability.h

AvailabilityMacros.h was introduced in 10.2, Availability is only available in
10.5+ - this increases backwards compatibility.
Merge branch 'master' of git.bro.org:bro
Merge remote-tracking branch 'origin/fastpath'

* origin/fastpath:
  rework libc++ patch to use AvailabilityMacros.h instead of Availability.h

Conflicts:
	src/input/readers/Ascii.cc
Updating baselines for packet filter changes.
Merge remote-tracking branch 'origin/topic/dnthayer/doc-changes-for-2.2'

* origin/topic/dnthayer/doc-changes-for-2.2:
  Add gawk to list of optional packages
  Add more script package README files
  Add NEWS about new features of broctl and upgrade info