Split CreateGeneratorTargets into two methods.

As the generate-time-related API is moving to cmGeneratorTarget, almost
all of generation code needs to be able to access instances of it.
Move GenerateTargetManifest to cmGeneratorTarget.
CTest: clean TargetDirs between unrelated coverage runs (issue 13143)
Add to RunCMake.Syntax test comments not separated by spaces

Extend the BracketComment5 test case to cover both bracket comments and
line comments starting immediately after a bracket comment closes.
Add to RunCMake.Syntax test \-escape cases

Add an Escape1 test case covering \-escape cases inside bracket, quoted,
and unquoted arguments.  Also cover comments immediately after quoted
and unquoted arguments on lines containing \# escapes.
Remove the Location member from cmTarget.

It is never used. Presumably it only exists so that a const char * can
be returned from GetLocation. However, that is getting in the way
now, so use a static std::string instead, which is already a common
pattern in cmake.
Configure Utilities/Sphinx for standalone build with CTest

Include the CTestUseLaunchers module in the standalone build of
Utilities/Sphinx so that it can be built under CTest with the
CTEST_USE_LAUNCHERS option.
CMake Nightly Date Stamp
Help: Glob manual/*.rst in Sphinx configuration

Add the man page description line as explicit markup at the top of each
Help/manual/*.rst file and scan it from conf.py to automatically
generate the man_pages Sphinx configuration value.  This reduces the
number of places that need to be changed when a new manual is added.
Merge topic 'fix-coverage-over-multiple-projects'

eb1d6ce CTest: clean TargetDirs between unrelated coverage runs (issue 13143)
Merge topic 'doc-build-standalone'

10ef247 Configure Utilities/Sphinx for standalone build with CTest
Merge topic 'doc-conf-auto-manuals'

f88332f Help: Glob manual/*.rst in Sphinx configuration
Merge topic 'cmake-syntax-test-escaped-comment'

8640e52 Add to RunCMake.Syntax test \-escape cases
144068e Add to RunCMake.Syntax test comments not separated by spaces
Merge topic 'use-generator-target'

638843a Remove the Location member from cmTarget.
90ef1cf Move GenerateTargetManifest to cmGeneratorTarget.
25f1df3 Split CreateGeneratorTargets into two methods.