Added starfighter.sh script (for use in distribution).

README.txt

@@ -106,6 +106,17 @@ final step (moving the Starfighter binary out from the src directory) is
 required; in particular, failure to do so under MacOS leads to a failure
 to load data (images, sounds, fonts) needed by Starfighter.
 
+On Linux and most other POSIX systems, you can instead build a run in
+place build with the following commands:
+
+    ./configure SF_RUN_IN_PLACE=1
+    make
+    mv misc/starfighter.sh .
+
+For Linux, this method is preferred as the binary itself often cannot be
+run by double-clicking, and the starfighter.sh script also automatically
+sets the current working directory, making it suitable for launchers.
+
 Run "./configure --help" to see all options for compiling.
 
 ------------------------------------------------------------------------

misc/starfighter.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+# This file has been dedicated to the public domain, to the extent
+# possible under applicable law, via CC0. See
+# http://creativecommons.org/publicdomain/zero/1.0/ for more
+# information. This file is offered as-is, without any warranty.
+#
+# Script which can be used to easily run Starfighter in-place without
+# installing on POSIX systems, but not on MacOS.
+
+SCRIPT=$(readlink -f "$0")
+SCRIPTPATH=$(dirname "$SCRIPT")
+cd $SCRIPTPATH
+./src/starfighter "$@"