recoll: use modern qt5 syntax

this allows the qt5 PG to properly select the correct
version of qt5 for the build system, and to properly
request the needed components according to current usage

textproc/recoll/Portfile

@@ -2,6 +2,9 @@
 
 PortSystem          1.0
 PortGroup           app 1.0
+PortGroup           qt5 1.0
+
+qt5.depends_component qtwebkit
 
 name                recoll
 version             1.24.4
@@ -22,8 +25,6 @@ checksums rmd160 5ad33e308a759f588cea3cdb1646e928ad0d474f \
     size 2674060
 
 depends_lib         port:xapian-core \
-                    port:qt5 \
-                    port:qt5-qtwebkit \
                     port:aspell \
                     port:libiconv \
                     port:zlib