Request for Review: Integrating build-infra changes into build forest

[Magnus Ihse Bursie]

Here is a webrev of the latest changes in build-infra that we want to 
push to the build forest.

http://cr.openjdk.java.net/~ihse/build-infra-integ/

For jdk, langtools, corba, jaxp and jaxws, all changes are in the 
makefiles directory.

No patches from hotspot are needed at this time. (See separate mail on 
this.)

In the top level, all changes are in the common directory (currently 
used exclusively by build-infra), except for a couple of changes at the 
root directory. This includes addition of a new, top-level configure 
script and the nbprojects directory. (Kelly, do you still want to push 
this?)

/Magnus