Merge topic 'WriteCompilerDetectionHeader-module' into next

62a4a67d Add the WriteCompilerDetectionHeader module.
Add the WriteCompilerDetectionHeader module.

Provide a function to write a portable header to detect compiler
features.  Generate a preprocessor #error for unknown compilers
and compiler versions whose features are not yet recorded.  This
error condition might be relaxed in the future, but for now it
is useful for verification of expectations.
Merge topic 'WriteCompilerDetectionHeader-module'

62a4a67d Add the WriteCompilerDetectionHeader module.
Merge topic 'update-kwsys'

7fa16df4 Merge branch 'upstream-kwsys' into update-kwsys
7762c574 KWSys 2014-05-07 (6074f33f)
Merge topic 'fix-atomic-rename-Windows-sharing-violation'

24bd7ae1 cmSystemTools::RenameFile: Retry on Windows ERROR_SHARING_VIOLATION
Merge branch 'master' into next