cmDependsC: Collapse relative include paths

While calculating dependencies collapse sequences such as

 ../../../a/b/c/../../d/e/../../e/f

to avoid total path lengths over the Windows path length limit as much
as possible.
CMake Nightly Date Stamp
FindGTK2: Do not fail on MSVC11 if vc100 libraries are available
FindGTK2: Add GTK2_DEFINITIONS variable

According to https://wiki.gnome.org/gtkmm/MSWindows on MSVC the /vd2
flag should be passed to the compiler in order to use gtkmm
CMake Nightly Date Stamp
CMake Nightly Date Stamp
install: do not strip dll import libraries (#14123)

DLL import libraries exist specifically to have symbols.
Ninja: GlobalNinjaGenerator WriteBuild and WritePhonyBuild non static

To properly track the usage of dependencies that are generated at
compile time as the side effect of other build steps we need
to make the WriteBuild and WritePhonyBuild commands non static
Ninja: Custom Command file depends don't need to exist before building

When converting custom commands for the ninja build system we
need to make sure that any file dependencies that exist in the build
tree are converted to phony targets. This tells ninja that these
files might not exist when starting the build, but could be generated
during the build.

This is done by tracking all dependencies for custom command targets.
After all have been written out we remove all items from the set
that have been seen as a target, custom command output, an alias,
or a file in the source directory. Anything that is left is considered
to be a file that will be generated as a side effect of another
custom command.
Merge topic 'curl-bug-1192'

e643e02 cmcurl: Backport curl bug 1192 fix (#14250)
Merge topic 'compiler-version-genex'

47a8db5 Add generator expressions for compiler versions.
Merge topic 'DontStripImportLibs' into next

ae8e654 install: do not strip dll import libraries (#14123)
Merge topic 'ninja_phony_targets' into next

539356f Ninja: Custom Command file depends don't need to exist before building
874e171 Ninja: GlobalNinjaGenerator WriteBuild and WritePhonyBuild non static
Merge topic 'ninja_phony_targets'

539356f Ninja: Custom Command file depends don't need to exist before building
874e171 Ninja: GlobalNinjaGenerator WriteBuild and WritePhonyBuild non static
88d27ad Add a test to expose a bug with add_custom_command and ninja.
Merge topic 'split-GeneratorExpression-test'

cacb938 Split the GeneratorExpression test into a third part.
Merge topic 'vs-windows-forms'

6c9712c VS: Add Resx configuration to the vcxproj file
Merge topic 'CMakeDetermineVSServicePack-vs11'

f449c68 CMakeDetermineVSServicePack: Add VS 11 update 3
Merge topic 'DontStripImportLibs'

ae8e654 install: do not strip dll import libraries (#14123)
Merge topic 'AddAutomocTargetFolder'

ba0e06f automoc: add a global AUTOMOC_TARGETS_FOLDER property
Merge topic 'clang-register-warnings'

e1381b1 Document removal of 'register' from flex/bison output
1399825 Remove some uses of obsolete 'register' storage specifier