(pgsql.l) : Fix libpq.so path for x86_64 and i386 environment discussed in https://github.com/euslisp/jskeus/issues/111
(.travis.yml) : Add apt-get update because error occurs in recent travis test reported in https://github.com/euslisp/EusLisp/pull/40
Merge pull request #40 from snozawa/fix_pgsql_path

Merged.