Various restructure of test framework handling of paths to avoid duplicate path editing which caused failed tests. Adjust many tests to deal with added subdirectories in build outputs now that toolset requirements are active.
* new/builtin.jam
(link-action.adjust-properties): Remove.
(linking-generator.generated-targets): Do what adjust-properties used to do.
(linking-generator.run): Convert <library> properties to sources.
(exe-generator): New class.
[SVN r20455]
default value will always be present in build properties of all
main targets. The change moves adding default value into main
targets --- it was done at the top level.
* new/build-request.jam
(expand-no-defaults): No longer local.
* new/build-system.jam
Use 'build-request.expand-no-defaults', not 'expand'.
* new/feature.jam
(add-defaults): Tolerate conditional properties
(e.g <variant>debug:<define>DEBUG)
* new/property-set.jam
(property-set.add-defaults): New method.
* new/targets.jam
(basic-target.final-properties): Add defaults.
* test/default_features.py: New test.
[SVN r17753]
