package-pack.mk's use of $(info ...) broke pigeonhole package

[W. Michael Petullo]

The pigeonhole package has used the following to determine the version
of dovecot, which is needed to build pigeonhole:

PKG_VERSION_DOVECOT:=$(shell make --no-print-directory -C ../dovecot/ val.PKG_VERSION V=s)

However, OpenWrt commit 18029977 added "$$(info $(1) fused dependencies: $$(Package/$(1)/DEPENDS))" 
to include/package-pack.mk. This causes the make command above to print
more than just dovecot's version. Here is the result:

dovecot fused dependencies: libc, libopenssl3, librt, zlib, libbz2-1.0, libcap
dovecot-utils fused dependencies: libc, dovecot2.3.21
2.3.21

The breaks the definition of "PKG_VERSION_DOVECOT", which expects only
"2.3.21".

Was this verbosity related to fused dependencies intentional? Could it
be made subject to V=x?

An alternative is to add "| grep -v 'fused dependencies'" to pigeonhole's
Makefile line, but this seems fragile. It would not handle similar
additions in the future.

-- 
Mike

:wq