Fixed: Check for alternative rst2pseudoxml binary.
Fixed: Check for alternative rst2pseudoxml binary.

On some systems, the corresponding binary is named "rst2pseudoxml"
instead of "rst2pseudoxml.py".

wezhang/vim-setup,wezhang/vim-setup,wezhang/vim-setup,wezhang/vim-setup,nikmartin/dotfiles,wezhang/vim-setup,wezhang/vim-setup