Save size by removing FLP client (like other clients) when disabled. It turns out this client would creep in other formats, wasting about 20kb of binary space

Author: Guillaume Piolat

formats/dplug/flp/client.d

@@ -6,6 +6,8 @@ License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
 */
 module dplug.flp.client;
 
+version(FLP):
+
 import core.atomic;
 import core.stdc.stdio: snprintf;
 import core.stdc.string: strlen, memmove, memset;

formats/dplug/flp/types.d

@@ -6,6 +6,8 @@ License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
 */
 module dplug.flp.types;
 
+version(FLP):
+
 nothrow @nogc:
 
 import core.stdc.config;