Fix spelling and typos (affecting users)
Fix spelling and typos (affecting binary data / module messages)
Fix spelling and typos (non-binary)
Fix spelling and typos (product names)

API, Borland, MinGW, UNIX, Mac OS X.
FindwxWidgets: add DOC strings with usual style
Explain distribution of Win9x binary on all Windows versions.
VS10: add detailed comment about MIDL processing
Docs: Update description of CMAKE_(BUILD_TYPE|CONFIGURATION_TYPES)

Bring woefully outdated descriptions somewhat up to speed.
Docs: Clarify that CMAKE_*_(PREFIX|SUFFIX) affect filenames

Add "filename" to the descriptions.
Docs: Clarify wording "flag used" => "flag (to|will) be used"

The phrase "flag used" is somewhat imprecise, so extend it to stress
intentions.

Also correct:

- "Flag" => "Flags"
- "[CMAKE_BUILD_TYPE]" => "<CONFIG>"
Merge topic 'doc-improvements' into next

7cc2805 Docs: Clarify wording "flag used" => "flag (to|will) be used"
2378a69 Docs: Clarify that CMAKE_*_(PREFIX|SUFFIX) affect filenames
56ca34d Docs: Update description of CMAKE_(BUILD_TYPE|CONFIGURATION_TYPES)
2bab472 VS10: add detailed comment about MIDL processing
e619111 Explain distribution of Win9x binary on all Windows versions.
5ca4336 FindwxWidgets: add DOC strings with usual style
f57800d Fix spelling and typos (product names)
bf019d7 Fix spelling and typos (non-binary)
ddac8d3 Fix spelling and typos (affecting binary data / module messages)
86832ce Fix spelling and typos (affecting users)