8002184: Fixed exclude and includes for jarsigner in new build
Reviewed-by: ohair

Reviewed-by: ohair

Summary: Update the vsvars.sh script to support VS2012
Reviewed-by: ohair, tbell

Reviewed-by: ohair

Summary: Build-infra project integration. Multiple authors on this work: erikj and ihse primarily, also changes from ohair, tbell, and dholmes. Special credit to ohstrom for his smartjavac work.
Reviewed-by: erikj, ihse, dholmes, tbell

Summary: Minimal makefile changes to enable building OpenJDK using MSYS on Windows7
Reviewed-by: ohair, tbell
Contributed-by: volker.simonis@gmail.com

Reviewed-by: chegar, mchung, mduigou, iris

Summary: Add OPENJDK to the COMMON_BUILD_ARGUMENTS
Reviewed-by: tbell

Reviewed-by: ihse, erikj, ohrstrom, tbell

Reviewed-by: ohair