xcalc: Changes to 'master'

[Gaetan Nadon]

 math.c  |    4 ++--
 xcalc.h |    7 ++-----
 2 files changed, 4 insertions(+), 7 deletions(-)

New commits:
commit 8afe5270310698d24fff370276c7fd91eb816720
Author: Gaetan Nadon <memsize at videotron.ca>
Date:   Tue Dec 17 08:24:45 2013 -0500

    Replace signal_t with void
    
    Now that Imake SIGNALRETURNSINT has been removed, the signal handler
    function return type can only be void.
    
    Reviewed-by: Alan Coopersmith <alan.coopersmith at oracle.com>
    Signed-off-by: Gaetan Nadon <memsize at videotron.ca>