added DESTDIR to esl makefiles so that it can be used during rpm building

libs/esl/php/Makefile

@@ -25,6 +25,6 @@ swigclean:
 reswig:	swigclean esl_wrap.cpp
 
 install: ESL.so
-	cp ESL.so $(shell php-config --extension-dir)
-	cp ESL.php $(shell php -r 'echo ini_get("include_path");' | cut -d: -f2)
-	echo 'extension=ESL.so' >> $(shell php-config --configure-options | tr " " "\n" | grep -- --with-config-file-scan-dir | cut -f2 -d=)/esl.ini
+	cp ESL.so $(DESTDIR)/$(shell php-config --extension-dir)
+	cp ESL.php /$(DESTDIR)/$(shell php -r 'echo ini_get("include_path");' | cut -d: -f2)
+	echo 'extension=ESL.so' >> $(DESTDIR)/$(shell php-config --configure-options | tr " " "\n" | grep -- --with-config-file-scan-dir | cut -f2 -d=)/esl.ini

libs/esl/python/Makefile

 LOCAL_CFLAGS=`python ./python-config --includes`
 LOCAL_LDFLAGS=`python ./python-config --ldflags`
-SITE_DIR=`python -c "from distutils.sysconfig import get_python_lib; print get_python_lib()"`
+SITE_DIR=$(DESTDIR)/`python -c "from distutils.sysconfig import get_python_lib; print get_python_lib()"`
 
 all: _ESL.so