Merge topic 'watcom-overhaul-notes'

559ae189 Help: Add notes about new OpenWatcom compiler id and versioning
Merge topic 'dev/fix-complex-tests'

7db77a82 tests: allow RelWithDebInfo and MinSizeRel configs to work
Merge topic 'compile-OBJECT_FILE_DIR'

8256ccb7 Add OBJECT_FILE_DIR rule placeholder for compilation lines
Merge topic 'xcode-15-string-apis'

23dc6aa1 Xcode: Fix single-configuration generation for version 1.5
Merge topic 'FindOpenGL-target'

b7804cb6 FindOpenGL: Provide imported targets for GL and GLU
Merge branch 'master' into next
cmGeneratorExpression: Add workaround for Borland compiler
Merge topic 'dev/backtrace-performance' into next

86be733f cmGeneratorExpression: Add workaround for Borland compiler