[analyzer] Link libStaticAnalyzerCheckers to libASTMatchers.

AST matchers are useful for the analyzer's checkers.
More patches on particular checkers shall follow.

This is the first time clang binary gets linked to ASTMatchers.
The binary size increase for the clang executable would be
+0.5% in release mode, +2% in debug mode.

Differential Revision: https://reviews.llvm.org/D25429

llvm-svn: 284112