Add replacement simple push/pop in the other two callers of
ReadListFile.

Get it from the Makefile instead.

Simplify the ReadListFileInternal API.

Don't pay a penalty for it in all GetProperty calls.

Additionally, the storage of properties will eventually move to
cmState, which should only contain state and not logic for policies
like this.

It is now unused.

The chaining logic doesn't belong to the container, and the
CMakeInstance pointer doesn't need to be in cmPropertyMap.

Size goes from 56 to 48 bytes with GNU libstdc++-5.1.

Provide a parent instead of requiring it to be computed through
the cmLocalGenerator.

Make it possible to group the various methods here a different way.

Construct cmOutputConverter only when needed.

Stephen Kelly authored Jun 03, 2015 and Brad King committed Jun 04, 2015

Not cmLocalGenerators.

Stephen Kelly authored May 30, 2015 and Brad King committed Jun 04, 2015

The generator should only have a function at generate time.

Stephen Kelly authored May 30, 2015 and Brad King committed Jun 04, 2015

Store the directories on the cmMakefile as explicitly not-configured-yet.

Compute deterministic GUIDs that are unique to the build tree by
hashing the path to the build tree with the GUID logical name.
Avoid storing them in the cache, but honor any found there.
This will allow project GUIDs to be reproduced in a fresh build
tree so long as its path is the same as the original, which may
be useful for incremental builds.

Leave the namespace open for other Parent types.

Leave the namespace open for other snapshot types.

Stephen Kelly authored May 24, 2015 and Brad King committed May 27, 2015

Refactor the local generator creation API to accept a
cmState::Snapshot.  Adjust MakeLocalGenerator to use the 'current'
snapshot in cases where there is no parent.  Create the snapshot
for subdirectories in cmMakefile::AddSubdirectory.

This means that snapshots are now created at the point of extending the tree,
as appropriate, and independently of the cmLocalGenerator and cmMakefile they
represent the state for.

Simplify the IssueMessage implementation.

The CallStack is checked above.

Port appropriate clients to use it.