[test] Add Indic tests from harfbuzz.old

Needs fonts to be put in test/fonts.  Tests are skipped otherwise.
Run with --verbose for details.  Working on improving the test runner
to make it easier to make sense of what's going on.

test/Makefile.am

@@ -7,7 +7,7 @@ DISTCLEANFILES =
 MAINTAINERCLEANFILES =
 
 if HAVE_GLIB
-AM_CPPFLAGS = -I$(top_srcdir)/src/ $(GLIB_CFLAGS) $(GTHREAD_CFLAGS)
+AM_CPPFLAGS = -DSRCDIR="\"$(srcdir)\"" -I$(top_srcdir)/src/ $(GLIB_CFLAGS) $(GTHREAD_CFLAGS)
 LDADD = $(top_builddir)/src/libharfbuzz.la $(GLIB_LIBS) $(GTHREAD_LIBS)
 
 EXTRA_DIST += hb-test.h
@@ -47,7 +47,13 @@ test_c_CPPFLAGS += $(FREETYPE_CFLAGS)
 test_cplusplus_CPPFLAGS += $(FREETYPE_CFLAGS)
 # TODO replace freetype with other stuff in the following test
 test_object_CPPFLAGS = $(AM_CPPFLAGS) $(FREETYPE_CFLAGS)
-test_object_LIBS = $(LDADD) $(FREETYPE_LIBS)
+test_object_LDADD = $(LDADD) $(FREETYPE_LIBS)
+
+TEST_PROGS += \
+	test-shape-complex \
+	$(NULL)
+test_shape_complex_CPPFLAGS = $(AM_CPPFLAGS) $(FREETYPE_CFLAGS)
+test_shape_complex_LDADD = $(LDADD) $(FREETYPE_LIBS)
 endif
 
 
@@ -58,6 +64,7 @@ TESTS_ENVIRONMENT = \
 	MALLOC_PERTURB_=$$(($${RANDOM:-256} % 256)) \
 	G_DEBUG=gc-friendly \
 	G_SLICE=always-malloc \
+	srcdir=$(srcdir) \
 	$(ENV)
 
 

test/hb-test.h

@@ -49,6 +49,27 @@ HB_BEGIN_DECLS
 				  ((const char *) s)[3]))
 
 
+static inline const char *
+srcdir (void)
+{
+  static const char *s;
+
+  if (!s) {
+    s = getenv ("srcdir");
+
+#ifdef SRCDIR
+    if (!s || !s[0])
+      s = SRCDIR;
+#endif
+
+    if (!s || !s[0])
+      s = ".";
+  }
+
+  return s;
+}
+
+
 /* Helpers */
 
 static inline void