Fix build with separate build tree.

--- libdbi-drivers-0.9.0/tests/cgreen/Makefile.in.~1~	Mon Mar 11 16:52:12 2013
+++ libdbi-drivers-0.9.0/tests/cgreen/Makefile.in	Wed Apr 30 16:57:34 2025
@@ -268,7 +268,7 @@
 top_srcdir = @top_srcdir@
 AUTOMAKE_OPTIONS = foreign
 noinst_LIBRARIES = libcgreen.a
-INCLUDES = -Iinclude
+INCLUDES = -I$(srcdir)/include
 libcgreen_a_SOURCES = src/unit.c src/messaging.c src/breadcrumb.c src/reporter.c src/assertions.c src/vector.c src/mocks.c src/constraint.c src/parameters.c src/text_reporter.c src/cdash_reporter.c 
 EXTRA_DIST = AUTHORS ChangeLog CMakeLists.txt ConfigureChecks.cmake COPYING CTestConfig.cmake DefineOptions.cmake INSTALL LICENSE NEWS README README.osx README.win32 TODO VERSION config.h.cmake cmake contrib doc include samples tests
 all: all-am