[oe] RDEPENDS_${PN}-dev = ${PN} badness

[John Lee]

Hi,

Take gtk-doc-dev for example:

The gtk-doc package is empty, so it will not be created.  However, if
you install gtk-doc-dev, it RDEPENDS on gtk-doc, which cannot be
found.  The install will fail.

I think we should use

RRECOMMENDS_${PN}-dev = "${PN} (= ${DEBPV})"

instead.

We (Julian Chu and me) found this when digging the cause of
meta-toolchain-openmoko build failure.  task-openmoko-toolchain-target
contains quite a few -dev packages in it, so the opkg-cl install will
fail.  The log looks something like this:

ERROR: Cannot satisfy the following dependencies for
         task-openmoko-toolchain-target: gtk-doc (= 1.0-r1)
         util-macros (= 1:1.1.5-r1) renderproto (= 1:0.9.3-r0) xproto
         (= 1:7.0.10-r1) bigreqsproto (= 1:1.0.2-r1) xextproto (=
         1:7.0.2-r1) xtrans (= 1:1.0.4-r0) xcmiscproto (= 1:1.1.2-r1)
         xf86bigfontproto (= 1:1.1.2-r1) kbproto (= 1:1.0.3-r1)
         inputproto (= 1:1.4.2.1-r0) fixesproto (= 1:4.0-r1)
         xineramaproto (= 1:1.1.2-r1) randrproto (= 1:1.2.1-r1)
         compositeproto (= 1:0.4-r0) damageproto (= 1:1.1.0-r1)

Similiar symptoms can be found in the packages above.

Regards,
John