Log Message:
(pkgsrc)
 - Remove patch-main.c (it was for 'Remove wrong casts.').
(upstream)
 - update 2.48 to 2.57
----------------------------------------------
Release 2.57 (January 24, 2015, Gerd Neugebauer)
 - Segfault in deTeX fixed.
 - Compiler warnings silenced.

Release 2.56
 - Disambiguating numbers adapted to fit to documentation.
 - Configuration of regex fixed to work on Linux.
 - Documentation typos fixed.
 - Signed characters fro translation tables changed to unsigned.
 - Autoconf configuration improved.

Release 2.55
 - Library biblatex.rsc added. It contains capitalizations of fields used in \ 
bibLATEX.
 - Fix for a misbehaviour when selecting entries according to an aux file with deeply
nested @strings.

Release 2.54
 - Command line parameter -V documented.
 - Resource key.make.alias added to create new @ALIAS records for any newly \ 
generated key.
 - Resource apply.alias added to expand the @ALIAS records.
 - Resource apply.include added to expand the @INCLUDE records.
 - Resource apply.modify added to expand the @MODIFY records.
 - Error message for -o without parameter added.
 - @ALIAS and @INCLUDE records where not printed. This has been fixed.
 - A test suite for BibTool has been integrated. It requires Perl to be present on
the system on which the tests should be run.

Release 2.53
 - In tex.define spaces before the = are ignored instead of leading to unwanted
   definitions.
 - An intialization error showed up on MacOS. This has been fixed.
 - The prepared makefiles for various operating systems missed an entry for \ 
crossref.[cho].
 - Typo in help text and copyright year fixed.

Release 2.52
 - A few incompatibilities with signed and unsigned characters which showed up on
MacOS only have been fixed.
 - A few compiler warnings have been fixed.

Release 2.51
 - Bugfix in names.c: The classification of name parts erroneously has used a wrong
translation under certain circumstances.

Release 2.50
 - Bugfix in names.c: The classification of name parts erroneously has used a wrong
   translation under certain circumstances.
 - Bugfix in key.c: The classification of name parts erroneously has considered, \ 
to be
   a first name under certain circumstances. This has been improved.
 - Improvement in names.c and key.c concerning printing in debug mode.

Release 2.49
 - New resource expand.crossref introduced. This resource enables the expansion
   of fields inherited via the crossref mechanism.
 - Bugfix in names.c: The classification of name parts erroneously has considered the
   initials V., I., and X. to be Roman numerals belonging to the jr part under \ 
special
   circumstances. This has been improved.
 - Name formatting now uses a fractional part to restrict the number of name parts
   considered.
 - New resource expand.crossref introduced. This resource enables the expansion
   of fields inherited via the crossref mechanism.
 - Bugfix in print.c: Some national characters have been lost. It was necessary \ 
to use
   an unsigned character as elsewhere.