[8u] RFR: 8038340: Cleanup and fix sysroot and devkit handling on Linux and Solaris

[Kevin Walls]

Hi,

I'd like to request review of this backport from 9 to 8u:

8038340: Cleanup and fix sysroot and devkit handling on Linux and Solaris
JBS: https://bugs.openjdk.java.net/browse/JDK-8038340

9 changesets:
base repo: http://hg.openjdk.java.net/jdk9/dev/rev/9786ef8ca58c
JDK: repo: http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/fdeb6a8b0f3a 
(clean import to jdk8u-dev)

JDK repo change imports cleanly.  base repo changes require some manual 
fixups in:

common/autoconf/basics.m4 addition of 
AC_DEFUN_ONCE([BASIC_SETUP_DEVKIT], fails, done manually
common/autoconf/toolchain.m4                            minor change 
didn't import
make/common/NativeCompilation.gmk                minor change didn't import

...plus run autogen to recreate generated files.


9 review thread: 
http://mail.openjdk.java.net/pipermail/2d-dev/2014-April/004361.html
(thread starts in March, not that it's long, but I don't see a link 
there to the previous emails in the thread: 
http://mail.openjdk.java.net/pipermail/2d-dev/2014-March/004333.html )

8u webrev:http://cr.openjdk.java.net/~kevinw/8038340/webrev.00/

Many thanks!
Kevin