Add sdl-config script to make porting easier

-Requires setting the path to sdl-config like ./configure --width-sdl-exec-path=`nspire-tools path`

ndless-sdk/bin/sdl-config

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+prefix=`nspire-tools path`
+exec_prefix=`nspire-tools path`/bin
+exec_prefix_set=no
+libdir=`nspire-tools path`/lib
+
+usage="\
+Usage: sdl-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs]"
+#usage="\
+#Usage: sdl-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs] [--static-libs]"
+
+if test $# -eq 0; then
+      echo "${usage}" 1>&2
+      exit 1
+fi
+
+while test $# -gt 0; do
+  case "$1" in
+  -*=*) optarg=`echo "$1" | LC_ALL="C" sed 's/[-_a-zA-Z0-9]*=//'` ;;
+  *) optarg= ;;
+  esac
+
+  case $1 in
+    --prefix=*)
+      prefix=$optarg
+      if test $exec_prefix_set = no ; then
+        exec_prefix=$optarg
+      fi
+      ;;
+    --prefix)
+      echo $prefix
+      ;;
+    --exec-prefix=*)
+      exec_prefix=$optarg
+      exec_prefix_set=yes
+      ;;
+    --exec-prefix)
+      echo $exec_prefix
+      ;;
+    --version)
+      echo 1.2.15
+      ;;
+    --cflags)
+      echo -I"`nspire-tools path`/include/SDL"
+      ;;
+    --libs|--static-libs)
+      echo -lSDL
+      ;;
+    *)
+      echo "${usage}" 1>&2
+      exit 1
+      ;;
+  esac
+  shift
+done