If: Extract cmConditionEvaluator from if() implementation
If: Introduce policy CMP0054 - don't dereference quoted variables in if()
Modules/Test*.cmake: Use if(DEFINED) to simplify conditions

Replace old hacks of the form 'if("${VAR}" MATCHES "^${VAR}$")'
with the much simpler 'if(NOT DEFINED ${VAR})'.
FindGTK2: Avoid depending on if() to dereference a quoted variable

Explicitly dereference GTK2_${_var}CONFIG_INCLUDE_DIR and
GTK2_${_var}_INCLUDE_DIR when comparing their values.
libarchive: Avoid depending on if() to dereference a quoted variable
cmcurl: Use if(DEFINED) to simplify conditions

Replace old hacks of the form 'if("${VAR}" MATCHES "^${VAR}$")'
with the much simpler 'if(NOT DEFINED ${VAR})'.
FPHSA: Avoid if() dereferencing of quoted variable

Legacy invocations may pass a variable name where "DEFAULT_MSG" belongs.
When comparing FPHSA_FAIL_MESSAGE to "DEFAULT_MSG", use a leading "x" on
both sides to avoid mistaking the value of the message for a variable
name.
Fix if() checks of CMAKE_SYSTEM_NAME on Cygwin

The CMAKE_SYSTEM_NAME is "CYGWIN", but we also define a variable
named "CYGWIN" to "1".  Avoid allowing if() to expand the "CYGWIN"
string as a variable.
Help: Fix set_tests_properties documentation typo

The example for FAIL_REGULAR_EXPRESSION should actually name it.
cmake: Add -A option to specify a generator platform

Define the 'cmake -A' option to set CMAKE_GENERATOR_PLATFORM
without having to spell out the whole variable name.  We choose
the name '-A' for "platform" because '-P' is already taken, and
in the common use case the "platform" is actually an architecture
(e.g. x64).

Teach the RunCMake test infrastructure to use -A to pass the generator
platform.  Extend the RunCMake.GeneratorPlatform test with a case to
verify that the -A option cannot be repeated.
CTest: Use -A option to pass generator platform selection

This is less verbose than defining CMAKE_GENERATOR_PLATFORM.
ExternalProject: Use -A option to pass generator platform

This is less verbose than defining CMAKE_GENERATOR_PLATFORM.
Tests: Use -A option to pass generator platform selection

This is less verbose than defining CMAKE_GENERATOR_PLATFORM.
Tests: Test setting a generator platform in a toolchain file

Teach the RunCMake.GeneratorPlatform test to cover setting
CMAKE_GENERATOR_PLATFORM in a file loaded by CMAKE_TOOLCHAIN_FILE.
Merge topic 'if-sanity'

858d5a0b Fix if() checks of CMAKE_SYSTEM_NAME on Cygwin
e177e7af FPHSA: Avoid if() dereferencing of quoted variable
425acc52 cmcurl: Use if(DEFINED) to simplify conditions
cede5cbd libarchive: Avoid depending on if() to dereference a quoted variable
2d97178b FindGTK2: Avoid depending on if() to dereference a quoted variable
0b12815d Modules/Test*.cmake: Use if(DEFINED) to simplify conditions
188a1f23 If: Introduce policy CMP0054 - don't dereference quoted variables in if()
b900c1cc If: Extract cmConditionEvaluator from if() implementation
Merge topic 'vs-generator-platform'

be6a555d Tests: Test setting a generator platform in a toolchain file
d506fee8 Tests: Use -A option to pass generator platform selection
11c9ddd6 ExternalProject: Use -A option to pass generator platform
29bd843e CTest: Use -A option to pass generator platform selection
eb7d8156 cmake: Add -A option to specify a generator platform
Merge topic 'doc-set_test_properties-example'

d8054987 Help: Fix set_tests_properties documentation typo