fix make test with shared extensions

# ok, this is the last ksh-related fix.
# it seems to be completely impossible to make it work, so I won't even try to do it anymore.
# complain to Sun and ksh authors if you have any problems.

Makefile.global

@@ -67,7 +67,7 @@ install-headers:
 		done; \
 	fi
 
-PHP_TEST_SHARED_EXTENSIONS=`(if test ! -z "$(PHP_MODULES)"; then for i in "$(PHP_MODULES)"; do . $$i ; echo -n '-d extension=$$dlname '; done; fi;)`
+PHP_TEST_SHARED_EXTENSIONS=`(if test ! -z "$(PHP_MODULES)"; then for i in "$(PHP_MODULES)"; do . $$i ; echo -n "-d extension=$$dlname "; done; fi;)`
 PHP_TEST_SETTINGS=-d 'open_basedir=' -d 'output_buffering=0' -d 'memory_limit=-1'
 
 test: all