update to latest stable version, fix musl compile

package/rdesktop/Makefile

@@ -4,9 +4,9 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=		rdesktop
-PKG_VERSION:=		1.6.0
+PKG_VERSION:=		1.8.1
 PKG_RELEASE:=		1
-PKG_MD5SUM:=		c6fcbed7f0ad7e60ac5fcb2d324d8b16
+PKG_MD5SUM:=		f5382c5c85b0d2cc88b9b1aa9bbf1356
 PKG_DESCR:=		client for Windows Terminal Services
 PKG_SECTION:=		net
 PKG_BUILDDEP:=		libiconv-tiny openssl
@@ -17,7 +17,10 @@ include $(TOPDIR)/mk/package.mk
 
 $(eval $(call PKG_template,RDESKTOP,rdesktop,$(PKG_VERSION)-${PKG_RELEASE},${PKG_DEPENDS},${PKG_DESCR},${PKG_SECTION}))
 
-CONFIGURE_ARGS+=	--with-openssl="${STAGING_TARGET_DIR}/usr"
+TARGET_CFLAGS+=		-D_GNU_SOURCE -D_POSIX_SOURCE
+CONFIGURE_ARGS+=	--with-openssl="${STAGING_TARGET_DIR}/usr" \
+			--disable-smartcard \
+			--disable-credssp
 
 rdesktop-install:
 	$(INSTALL_DIR) $(IDIR_RDESKTOP)/usr/bin