Bug fixes and some improvements

[Bai-Chiang]

• Add libxcrypt1 to libactpol and pixell linux build. Fix missing libcrypt.so.1 error. https://github.com/conda-forge/perl-feedstock/issues/56#issuecomment-1741386647
• Remove extra quotes in pkgs/so3g/meta.yaml script_env field. The extra quotes cause conda-build generate build_env_setup.sh with

  export CFLAGS=""-Wno-error -O3 -g -fPIC"" export CXXFLAGS=""-Wno-error -O3 -g -fPIC -std=c++14"" and failed to build package.

• Add conda-verify package. Remove WARNING message.

  WARNING: Importing conda-verify failed. Please be sure to test your packages. conda install conda-verify to make this message go away.

• Add nodefaults channel to new environment. This will ignore channels listed in default ~/.condarc
• Add conda-libmamba-solver package add use libmamba solver in new environment. This will speed up build process when trying to solve dependencies.
• soconda.sh When specifing ${base} should skip getting conda_dir from conda command.
• soconda.sh use -z compare length of string.