[vendor/pkgsrc] Add pax to the list of known pkgsrc modules
[pkgtools/pkg_install] Fix bootstrap version number

For consistency with the package Makefile, set the internal version number to 0
when compiling the bootstrap code. Otherwise the test introduced in 71855c7
does not work for bootstrap.

Problem reported by Ellon Mendes, thanks!
[mk/sysdep] Let ccache log what it is doing in WRKDIR/ccache.log

This can be useful for tracking down problems.
[net/libtclserv_client] Upgrade to 0.5

Changes since 0.4:
	- fix handling of abort if the request has not been acked properly
[mk] Fix the 'replace' target

The 'reinstall' target has been dropped in 8ad43ef. Fix the 'replace' target
accordingly: the deinstall + reinstall sequence can be replaced by just
'install'.

Spotted by Arnaud Degroote, thanks!
[mk] Fix 'print-PLIST': require pkg-vars.mk to pull in PKG_INFO definition

Spotted by Arnaud Degroote, thanks!
[mk] Fix print-PLIST to filter out duplicates after path cleaning and substs

It can happen that duplicate PLIST entries are not detected until after the
path are cleaned (e.g. a duplicated / in a path is removed).

This is a bit redundant with the sort -u process, but the entries should be
sorted before back substitution of variables, so the sorting cannot take place
at the very end.

Noticed by Arnaud Degroote, thanks!
[mk] Change the environment cleaning strategy

Replace the hack used for cleaning up the environment. The most painful
issue with the previous strategy was with the ?= operator not working.

In gmake, if a variable is defined in the environment, ?= does nothing
(although a plain = is effective, which is a bit counter intuitive).
But ?= assigments are sometimes necessary for allowing user settings from
robotpkg.conf to override defaults, and all the point of cleaning the env. is
to make sure that it won't affect robotpkg.

The new strategy consists in just restarting gmake from an (almost) empty
environment (env -i). This is cleaner and lets gmake behave exactly as if the
filtered variables had never been present. In particular, ?= works as
expected.

While here, fix a long standing issue with $HOME. HOME is not filtered anymore,
so that ${HOME} can be used normally in robotpkg.conf. THe HOME variable is
now simply reset in the ALL_ENV environment which is passed to the
fetch/configure/build/install/etc. sub processes.
[mk] Drop useless depends-clean

The depends target is nowadays automatically remade when needed, or when `make
depends` is invoked explicitly, so depends-clean is useless (and was raising an
error because of the dropped configure-clean target).

Thanks to Arnaud Degroote for the report.
[net/zeromq] Update MASTER_SITES

It seems that distfiles are now available from http://download.zeromq.org/

XXX the packaged 2.0.10 version is really outdated now. Are there any users
that would be negatively impacted by an upgrade to the latest 4.0.1 (which is
incompatible with 2.0 series) ?
[audio/festival] Add a MASTER_SITES mirror

festvox.org had a temporary outage. This happens from time to time, so adding
an extra mirror site will help to avoid spurious fatal error reports in this
situation.
[audio/festlex-poslex] Add an extra MASTER_SITES on FreeBSD ports
[mk] Transform failures to contact a site in mirror-distcheck into a warning

It is sufficient to raise a warning instead of a fatal error when a site in
MASTER_SITES is failing. This will still be reported during bulk builds.
[mk] Display the list of update-in-progress packages when resuming an update

This may help users understanding what is going on when an update-in-progress
is restarted. Also print how to discard the update state and start from
scratch.
[devel/hpp-util] Upgrade to hpp-util v0.8.0.

  * Redefine some KiteLab macros to avoid triggering warnings.
[devel/hpp-model] Upgrade to version 2.4.0.
[path/hpp-model-urdf] Upgrade to v0.4.1.
[math/hpp-geometry] Upgrade to v1.3.1.
[devel/hpp-kwsplus] Upgrade to version 2.4.1.

  Fix some compilation warnings
[path/hpp-gik] Upgrade to v2.10.1.