BUG#19907 - simple_parser plugin cannot be installed

The problem was that simple_parser was compiled as static plugin, which
is intended to be linked into server, but not plugged.

This patch makes simple_parser to be compiled as dynamic plugin by adding
-DMYSQL_DYNAMIC_PLUGIN into CFLAGS.

plugin/fulltext/Makefile.am

@@ -6,4 +6,4 @@ noinst_LTLIBRARIES= mypluglib.la
 #pkglib_LTLIBRARIES= mypluglib.la
 mypluglib_la_SOURCES= plugin_example.c
 mypluglib_la_LDFLAGS= -module -rpath $(pkglibdir)
-
+mypluglib_la_CFLAGS= -DMYSQL_DYNAMIC_PLUGIN