Claim maintainership of recently added packages

Also set platforms for some packages where it was missing.
typo: occured -> occurred
Merge pull request #1894 from ellis/submit/typo-in-stage-1-init

typo: occured -> occurred
Add romildo to maintainers list
Added hexchat
Merge pull request #1893 from ttuegel/maintainer

Claim maintainership of recently added packages
R: update to version 3.0.3
haskell-hsini: add version 0.2
haskell-esqueleto: update to version 1.3.4.6
haskell-mime-mail: update to version 0.4.4.1
haskell-postgresql-libpq: update to version 0.9.0.0
haskell-LambdaHack: update to version 0.2.12
haskell-hsini: disable test suite to avoid build errors caused by a bogus cabal file
haskell-time: update to version 1.4.2
haskell-Cabal: update to version 1.18.1.3
persistent-postgresql: jailbrek to fix build with recent postgresql-libpq
LambdaHack: use consistent versions of the 'binary' package
yap: revert update from 6.2.2 to 6.3.3

This reverts commit 41c662dcf68ce41c64ceb73a2f21a8aac09eb41e. The update
doesn't compile in i686, and I don't have time to investigate at the moment.
Merge branch 'master' of https://github.com/NixOS/nixpkgs
swig: add meta.platforms (set to linux)

So that Hydra will build swig. This provides binary packages to users
and build breakage detection.