system/dosbox: Added a patch for gcc>=4.6

This commit also adds a "set -e" and noted
SDL_sound as an optional dependency.

Signed-off-by: Robby Workman <rworkman@slackbuilds.org>

system/dosbox/README

@@ -1,3 +1,5 @@
 DOSbox is a DOS emulator/virtual machine for X11 and Unix.
 It allows you to play many of the old games you grew up loving,
 as well as many apps designed to run on DOS.
+
+SDL_sound is an optional dependency.

system/dosbox/dosbox-0.74-gcc46.patch

@@ -0,0 +1,10 @@
+--- include/dos_inc.h.old	2011-04-28 08:46:04.505011354 +0200
++++ include/dos_inc.h	2011-04-28 08:46:27.104408178 +0200
+@@ -21,6 +21,7 @@
+ #ifndef DOSBOX_DOS_INC_H
+ #define DOSBOX_DOS_INC_H
+ 
++#include <cstddef>
+ #ifndef DOSBOX_DOS_SYSTEM_H
+ #include "dos_system.h"
+ #endif

system/dosbox/dosbox.SlackBuild

@@ -25,7 +25,7 @@
 
 PRGNAM=dosbox
 VERSION=${VERSION:-0.74}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 # Automatically determine the architecture we're building on:
@@ -57,6 +57,7 @@ else
     LIBDIRSUFFIX=""
 fi
 
+set -e
 
 rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
@@ -71,6 +72,9 @@ find . \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;
 
+# Fix building with gcc>= 4.6.x, thanks to gentoo people
+patch -p0 < $CWD/dosbox-0.74-gcc46.patch
+
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \
@@ -85,7 +89,6 @@ CXXFLAGS="$SLKCFLAGS" \
 make DESTDIR=$PKG
 make install-strip DESTDIR=$PKG
 
-
 find $PKG/usr/man -type f -exec gzip -9 {} \;
 for i in $(find $PKG/usr/man -type l) ; do ln -s $(readlink $i).gz $i.gz ; rm $i ; done