Re: Add LZ4 compression in pg_dump

Some little updates since I last checked:

+ * This file also includes the implementation when compression is none for
+ * both API's.

=> this comment is obsolete.

s/deffer/infer/ ?
or determine ?
This typo occurs multiple times.

currently this includes only ".gz"
=> remove this phase from the 002 patch (or at least update it in 003).

deferred by iteratively
=> inferred?

s/Requrires/Requires/
twice.

s/occured/occurred/

s/disc/disk/ ?
Probably unimportant, but "disc" isn't used anywhere else.

"compress file handle"
=> maybe these should say "compressed"

supports_compression():
Since this is an exported function, it should probably be called
pgdump_supports_compresion.