Support building from directories other than the source directory.

Patch contributed by Mo DeJong -- thanks!

This closes SF patch #431340.

expat/configure.in

@@ -94,13 +94,13 @@ dnl in "embedded distributions", where only part of the Expat sources
 dnl are included in the sources for another project.
 
 OUTPUT="Makefile lib/Makefile lib/expat.h"
-if test -d xmlwf; then
+if test -d ${srcdir}/xmlwf; then
     OUTPUT="$OUTPUT xmlwf/Makefile"
 fi
-if test -d sample; then
+if test -d ${srcdir}/sample; then
     OUTPUT="$OUTPUT sample/Makefile"
 fi
-if test -d examples; then
+if test -d ${srcdir}/examples; then
     OUTPUT="$OUTPUT examples/Makefile"
 fi
 AC_OUTPUT($OUTPUT)

expat/lib/Makefile.in

@@ -77,7 +77,7 @@ mkinstalldirs = $(SHELL) $(top_srcdir)/conftools/mkinstalldirs
 CONFIG_HEADER = ../config.h
 CONFIG_CLEAN_FILES = 
 
-INCLUDES = -I$(srcdir) -I..
+INCLUDES = -I$(srcdir) -I. -I..
 DEFS = @DEFS@ -DPACKAGE='"$(PACKAGE)"' -DVERSION='"$(PACKAGE)_$(VERSION)"'
 
 CPPFLAGS = @CPPFLAGS@