Reworked LV2 plug-ing support.

This enables all platforms to use LV2 plugins in non-GUI mode.  There is
still some work to do, like subgroup handling and better scalepoint
handling.

lib-src/lv2/build

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+function waf
+{
+   pkg=$1
+   pushd >/dev/null ${pkg}
+   shift
+   python waf --prefix="." --include="." $@ build || exit 1
+   popd >/dev/null 
+
+   export PKG_CONFIG_PATH="$(pwd)/${pkg}/build:${PKG_CONFIG_PATH}"
+   export CFLAGS="-I$(pwd)/${pkg} ${CFLAGS}"
+   export LDFLAGS="-L$(pwd)/${pkg} -l${pkg}-0 ${LDFLAGS}"
+
+   if [ -e ${pkg}/build/*.a ]
+   then
+      mkdir -p obj
+      pushd obj
+      ar vx ../${pkg}/build/*.a
+      ar vq ../liblv2.a *
+      popd
+      rm -rf obj
+   fi
+}
+
+[ -e liblv2.a ] && exit 0
+
+waf lv2 --no-plugins
+waf serd --no-utils --static --no-shared
+waf sord --no-utils --static --no-shared
+waf sratom --static --no-shared
+waf lilv --no-utils --static --no-shared
+
+exit 0