RFR: 8374623: Move DependentAlwaysFalse variable template to its own file

[Kim Barrett]

Please review this trivial change that moves the definition of the
DependentAlwaysFalse variable template from globalDefinitions.hpp to its own
file metaprogramming/dependentAlwaysFalse.hpp.  Also updated using files to
include the new header.

Testing: mach5 tier1

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Commit messages:
 - move variable

Changes: https://git.openjdk.org/jdk/pull/29068/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29068&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374623
  Stats: 49 lines in 4 files changed: 38 ins; 8 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/29068.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29068/head:pull/29068

PR: https://git.openjdk.org/jdk/pull/29068