Update 5.0.1 to 5.1.2
---------------------
2014-06-07  Jay Berkenbilt  <ejb@ql.org>
* 5.1.2: release

* MS Visual C++ build: explicitly target Windows 5.0.1 (XP)

* New example program: pdf-split-pages: efficiently split PDF
files into individual pages.

* Bug fix: don't fail on files that contain streams where /Filter
or /DecodeParms references a stream. Before, qpdf would try to
convert these to direct objects, which would fail because of the
stream.

2014-02-22  Jay Berkenbilt  <ejb@ql.org>
* Bug fix: if the last object in the first part of a linearized
file had an offset that was below 65536 by less than the size of
the hint stream, the xref stream was invalid and the resulting file
is not usable.  This is now fixed.

2014-01-14  Jay Berkenbilt  <ejb@ql.org>
* 5.1.1: release

2013-12-26  Jay Berkenbilt  <ejb@ql.org>
* Bug fix: when copying foreign objects (which occurs during page
splitting among other cases), avoid traversing the same object
more than once if it appears more than once in the same direct
object.  This bug is performance-only and does not affect the
actual output.

2013-12-17  Jay Berkenbilt  <ejb@ql.org>
* 5.1.0: release

2013-12-16  Jay Berkenbilt  <ejb@ql.org>
* Document and make explicit that passing null to
QUtil::setRandomDataProvider() resets the random data provider.

* Provide QUtil::getRandomDataProvider().

2013-12-14  Jay Berkenbilt  <ejb@ql.org>
* Allow anyspace rather than just newline to follow xref header.
This allows qpdf to read a wider range of damaged files.

2013-11-30  Jay Berkenbilt  <ejb@ql.org>
* Allow user-supplied random data provider to be used in place of
OS-provided or insecure random number generation.  See
documentation for 5.1.0 for details.

* Add configure option --enable-os-secure-random (enabled by
default).  Pass --disable-os-secure-random or define
SKIP_OS_SECURE_RANDOM to avoid attempts to use the operating
system-provided secure random number generation.  This can be
especially useful on Windows if you wish to avoid any dependency
on Microsoft's cryptography system.

2013-11-29  Jay Berkenbilt  <ejb@ql.org>
* If NO_GET_ENVIRONMENT is #defined, for Windows only,
QUtil::get_env will always return false.  This was added to
support a user who needs to avoid calling GetEnvironmentVariable
from the Windows API.  QUtil::get_env is not used for any
functionality in qpdf and exists only to support the test suite
including test coverage support with QTC (part of qtest).

* Add /FS to msvc builds to allow parallel builds to work with
Visual C++ 2013.

* Add missing #include <algorithm> in some files that use std::min
and std::max.

2013-11-21  Jay Berkenbilt  <ejb@ql.org>
* Change image comparison tests, which are disabled by default, to
use tiff files with 8 bits per sample rather than 4.  This works
around a bug in tiffcmp but also increases time and disk space for
image comparison tests.

2013-10-28  Jay Berkenbilt  <ejb@ql.org>
* Fix MacOS compilation errors by adding a missing #include
<string> in a header file.

(mef)