xpr: Changes to 'master'

[Paulo Cesar Pereira de Andrade]

 .gitignore   |    4 ++
 Makefile.am  |    4 +-
 configure.ac |    8 +++++
 x2jet.c      |   50 +++++++++++++++++++++------------
 x2pmp.c      |    7 ++--
 xpr.c        |   89 +++++++++++++----------------------------------------------
 6 files changed, 72 insertions(+), 90 deletions(-)

New commits:
commit f53142c6882f08b646ebe6d614bb6f14d5dcdb57
Author: Paulo Cesar Pereira de Andrade <pcpa at mandriva.com.br>
Date:   Thu Jan 22 17:34:02 2009 -0200

    Correct make distcheck and most gcc/sparse warnings.
    
      Remaining warnings are due to bit/shift operations mixed with
    addition/multiplication/etc. "1<<2-1" should be read as
    "1 << (2 - 1)", and not "(1 << 2) - 1". The first 2 warnings
    appear to be for a confusing case, as a few lines bellow
    it is adding parenthesis to the shift operation, but should be
    being parsed correctly (not added parenthesis to avoid the
    adding them wrong, and "hiding" the warning...)