Merge

8179892: Update build documentation for JDK 9
Reviewed-by: erikj

8177770: Need more precise control on build system logging
Reviewed-by: ihse, erikj

8176084: Developer-friendly run-test facility
Reviewed-by: erikj

8174064: Tab expansion broken for make
Reviewed-by: erikj

8039103: "explicitly" is misspelled as "explicitely" in configure scripts
Reviewed-by: erikj, tbell

8167424: Various trivial fixes in build system
Reviewed-by: erikj, tbell

8165314: Javac server process left running if build fails on Windows
Reviewed-by: tbell, wetmore

8154841: Let different Jib profiles have different default make targets
Reviewed-by: dholmes, tbell

8150203: Incremental update from build-infra project
Reviewed-by: erikj

8149479: Fix compare.sh to have a clean baseline with COMPARE_BUILD
Reviewed-by: ihse, tbell

8148655: LOG=cmdlines and other build-infra fixes
Reviewed-by: erikj

8148120: Incremental update from build-infra project
Reviewed-by: erikj

8146403: Windows build can be faster
Reviewed-by: ihse

8141696: Improve COMPARE_BUILD
Reviewed-by: tbell, erikj

8140277: Configuration out-of-date check should also check closed sources
Reviewed-by: erikj

8138864: Build with nice to lower UI impact
Reviewed-by: erikj

8137014: Various improvements in build infrastructure
Reviewed-by: erikj
Contributed-by: Magnus Ihse Bursie <magnus.ihse.bursie@oracle.com>, Erik Joelsson <erik.joelsson@oracle.com>

8136695: Automatic build comparison with COMPARE_BUILD
Reviewed-by: erikj

8135180: Print configure arguments using make print-configuration
Reviewed-by: erikj

8062618: Create a build failure summary at end of build log
Reviewed-by: erikj

8074859: Turn on warnings as error
Reviewed-by: erikj

8076465: New Init.gmk needs improvements
Reviewed-by: erikj, tbell

8076123: 9-dev build fail: make/Init.gmk:142: *** multiple target patterns. Stop.
Reviewed-by: ihse

8076060: Improve make bootstrap process
Reviewed-by: erikj