Added support to build subpackages from a single source.

proplib has been converted to see how it works.

--HG--
extra : convert_revision : dfcd1f547884108d69682e9e62b4aacfa431cc83

templates/proplib/dev.template

@@ -0,0 +1,17 @@
+# Template file for 'proplib-dev'.
+#
+short_desc="${short_desc} (development files)"
+long_desc="${long_desc}
+
+ This package contains files for development, headers, static libs, etc."
+run_depends="proplib-libs-0.3"
+
+do_install()
+{
+	local destdir=${XBPS_DESTDIR}/${pkgname}-${version}
+
+	mkdir -p ${destdir}/usr/lib
+	mv ${XBPS_DESTDIR}/${sourcepkg}-${version}/usr/include ${destdir}/usr
+	mv ${XBPS_DESTDIR}/${sourcepkg}-${version}/usr/lib/libprop.*a \
+		${destdir}/usr/lib
+}