Help: Add missing period.
Help: Fix CMP0037 docs.

INTERFACE libraries may not use double-colons, but IMPORTED
targets may.
Constify cmStrCmp.
Genex: Allow single param expressions to accept arbirary input.

Existing single-parameter expressions work due to special casing
which assumes that if there is only one parameter, and the node
accepts arbitrary content, then the result is the input.

This is true for the existing expressions matching that
pattern - namely the "1" and "TARGET_NAME" expressions. However,
the LOWER_CASE, and UPPER_CASE expressions should also accept
arbitrary content, and in their case, the result is not the input.

Refactor the cmGeneratorExpressionEvaluator to allow that extension.
Actually evaluate the "1" and "0" nodes.
Genex: Accept arbitrary content in *_CASE and MAKE_C_IDENTIFIER.
Export: Clean up comment.

Introduced in commit a4263c9f (export(): Handle multiple dependent export
sets., 2013-10-10)
Genex: Always return immediately on error.
Genex: Use case-sensitive comparison in PLATFORM_ID.
Automoc: Fix style

Insert whitespace before operators.
cmTarget: Fix typo

'a ALIAS' -> 'an ALIAS'
Export: Skip INTERFACE libraries when generating -config files.

The properties object has just been created, so is always empty,
which means the if block is never entered. The following lines do
not have any effect because an INTERFACE library has no LOCATION.
At the end, no code is generated for INTERFACE libraries in
config-specific exported files, so skip them early.
Merge topic 'minor-cleanup' into next

da6af1d Export: Skip INTERFACE libraries when generating -config files.
cad5c79 cmTarget: Fix typo
08e72a3 Automoc: Fix style
2eda924 Genex: Use case-sensitive comparison in PLATFORM_ID.
9436353 Genex: Always return immediately on error.
20a06d0 Export: Clean up comment.
f4d9466 Genex: Accept arbitrary content in *_CASE and MAKE_C_IDENTIFIER.
d36b489 Genex: Allow single param expressions to accept arbirary input.
218ad35 Constify cmStrCmp.
4cb7d79 Help: Fix CMP0037 docs.
5187580 Help: Add missing period.