Add colored man plugin.
Solaris portability tweaks.
Update Solaris changes to use OSTYPE and zsh datetime  module.
Add '_src/zsh_plugins/' from commit '6d4a2473daaf0a31b47065e4f5b71129891cf748'

git-subtree-dir: _src/zsh_plugins
git-subtree-mainline: 22cdae68b1fa86930e531dbf0330692b8c49fc03
git-subtree-split: 6d4a2473daaf0a31b47065e4f5b71129891cf748
Add '.zsh_plugins/colored-man/' from commit '6d4a2473daaf0a31b47065e4f5b71129891cf748'

git-subtree-dir: .zsh_plugins/colored-man
git-subtree-mainline: 87e8c0de52d3a2acecfcafb8d8143fcee3093fcd
git-subtree-split: 6d4a2473daaf0a31b47065e4f5b71129891cf748
update