Renumbering commandline, pdll_arm and toolchain_macro tests to avoid duplicates. Renaming qt_helloworld, commandline and whatcomp to match the test and file names. Allocating ids to qt_helloworld and apply_usecases. Fixing typo in commandline test and enabling it so it actually runs.

component           build_metadata
source   \src\tools\dev\build\build_info\build_metadata 
source   \src\tools\dev\build\package_definition.xml
source   \src\tools\dev\build\distribution.policy.s60
notes_source      \component_defs\release.src
ipr T