introduce ":like_*" import tags as suggested

Toby Inkster provided support for his suggestion of import tags for
compatible API versions. This suggestion filled the last missing gap
for long term API support.
note changes for 0.400_007
clean up configure dependencies
add dependency update to Changes for 0.400_007
bump version to 0.400_008
fix none for 0.24 and clarify API tag documentation
refactor import tags for clarity

This reorganizes various import lists and tags to clarify which
functions and aliases were present or absent in various API versions.
fix typos and whitespace