Standalone: Implement -D and -U for preprocessor macros.
Works for both GLSL and HLSL.
Fixes #87.
diff --git a/Test/runtests b/Test/runtests
index 945a0f3..e42aaad 100755
--- a/Test/runtests
+++ b/Test/runtests
@@ -120,6 +120,14 @@
diff -b $BASEDIR/hlsl.dashI.vert.out $TARGETDIR/hlsl.dashI.vert.out || HASERROR=1
#
+# Testing -D and -U
+#
+$EXE -DUNDEFED -UIN_SHADER -DFOO=200 -i -l -UUNDEFED -DMUL=FOO*2 glsl.-D-U.frag > $TARGETDIR/glsl.-D-U.frag.out
+diff -b $BASEDIR/glsl.-D-U.frag.out $TARGETDIR/glsl.-D-U.frag.out || HASERROR=1
+$EXE -D -e main -V -i -DUNDEFED -UIN_SHADER -DFOO=200 -UUNDEFED hlsl.-D-U.frag > $TARGETDIR/hlsl.-D-U.frag.out
+diff -b $BASEDIR/hlsl.-D-U.frag.out $TARGETDIR/hlsl.-D-U.frag.out || HASERROR=1
+
+#
# Final checking
#
if [ $HASERROR -eq 0 ]