nixos-install: fix -I flag
autoreconf may need gettext

E. g. for AC_LIB_PREFIX
Strongswan: use full path to ipsec

This fixes issue:

... charon[6135]: 11[CHD] updown: /bin/sh: ipsec: command not found
Strongswan: updown script uses ip and iptables utilities
Strongswan: preserve PATH
haskell-mode: add current snapshot of git 'master' branch as a low-prio alternative to the (fairly old) release version
all-packages.nix: strip trailing whitespace
Merge pull request #5440 from ip1981/strongswan

Patches to Strongswan
Cleanup of the 'morituri' expression.

 - Replaces brittle path substitutions by patch.

 - Adds `namePrefix = ""` to avoid python prefix.
pstack: Remove

It doesn't work anymore. And anyway, this probably shouldn't have been
a package in the first place (it's just some gdb options).
connect 1.104

Upstream moved to https://bitbucket.org/gotoh/connect
Merge pull request #5443 from rycee/morituri-cleanup

Cleanup of the 'morituri' expression.
Merge pull request #5445 from pmahoney/connect

connect 1.104
Merge pull request #5390 from abbradar/nixos-isntall

nixos-install: fix -I flag
blender: Add OpenCOLLADA support