FindJava: Do not accept OS X stub 'java' as Java

OS X provides a stub 'java' to inform callers that Java is not present.
When checking the 'java -version' output, look for such a message and if
found pretend 'java' was not found.

Suggested-by: Sean McBride <sean@rogue-research.com>
Avoid if() quoted auto-dereference when checking for "MSVC"

When testing CMAKE_<LANG>_COMPILER_ID values against "MSVC", do not
allow the definition of the "MSVC" variable to be expanded.
Avoid if() quoted auto-dereference when checking for "MSVC"

When testing CMAKE_<LANG>_COMPILER_ID values against "MSVC", do not
allow the definition of the "MSVC" variable to be expanded.
Merge branch 'backport-fix-CMP0054-MSVC' into fix-CMP0054-MSVC
Merge topic 'FindJava-no-osx-stub'

dd378258 FindJava: Do not accept OS X stub 'java' as Java
Merge topic 'fix-CMP0054-MSVC'

fa1a066a Merge branch 'backport-fix-CMP0054-MSVC' into fix-CMP0054-MSVC
4d52cd36 Avoid if() quoted auto-dereference when checking for "MSVC"
543c4304 Avoid if() quoted auto-dereference when checking for "MSVC"
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