Removed superfluous footnote symbol "(*)".
Fixed various coding style issues.
Added trace log message on VR replacement.

Output message to trace logger when a post-1993 value representation like UT
or UN is replaced by OB because support for these "new" VRs is disabled.
Added two new global flags for VR generation.

Added global flags for enabling/disabling the support of OF and OD as a valid
VR. When disabling the support for these post-1993 VRs, OB is used instead.
Made use of new global flags for VR generation:

The new global flags for enabling/disabling the support of OF and OD as a
valid VR are now used for the "post-1993 VR" command line options.
Updated our email address for bug reports.
Updated to autoconf 2.69.
Added definition of DCMTK_PACKAGE_URL.

Added definition of DCMTK_PACKAGE_URL in order to be consistent with the
GNU autoconf (aka configure) system. However, this setting is currently
unused and, therefore, uncommented/disabled.
Added Doxygen tag file to .gitignore.
Added *.patch files to .gitignore.
Also updated autoconf support files.

After updating the configure script to autoconf 2.69, now also the support
files that are shipped with the autoconf package have been updated.
Updated automake script to version 1.14.

Updated script that creates filesystem directories to the most recent version
of automake, even though only minor changes were made.
Fixed typos.
Fixed various typos.
Fixed various typos in comments.
Added method to determine SpecificCharacterSet.

Added method to class DcmCharString that allows for determining the value
of the SpecificCharacterSet element of the surrounding dataset/item.
Closes DCMTK Feature #555.
Added 'charset' parameter to checkStringValue().

Added optional character set parameter to static function checkStringValue()
in order to make sure that only ASCII and Latin-1 strings are checked for
their conformance with the VR definition (this is a current limitation of the
underlying VR checker). Also the checkValue() method now uses the value of
the SpecificCharacterSet element of the surrounding dataset/item.
Added new variant of checkElementValue().

This new variant gets a pointer to a DICOM element (and not a reference).
In addition, the getAndCheckXXXFromDataset() methods now make sure that no
element copy is created _before_ the element is checked. This is because
otherwise there would be no access to the SpecificCharacterSet element of
the surrounding dataset/item, which is needed for the VR checker.
Avoid unnecessary copies of sequence elements.

By referencing the sequence elements instead of copying, it is also possible
to access the SpecificCharacterSet element of the surrounding dataset/item,
which is needed for the VR checker. Partially closes DCMTK Bug #547.
Enhanced implementation of checkCode() method.

Made sure that the checkCode() method does not reject valid code values that
use extended characters that are not yet supported by dcmdata's VR checker
(i.e. all but ASCII and ISO Latin-1). Partially closes DCMTK Bug #547.