8192854: FONTCONFIG_CFLAGS missing from spec.gmk.in Reviewed-by: erikj, prr

8189749: Devise strategy for making source level checks more uniform Summary: Create a 'feature' enum which is responsible for handling source version checks and related diagnostic generation Reviewed-by: jjg, jlahoda

8192961: Remove some double semicolons Reviewed-by: redestad

8191955: AArch64: incorrect prefetch distance causes an internal error Summary: Fixed incorrect prefetch distance on AArch64. Reviewed-by: aph