Unused import has been removed

Treat erroneous use (or lack of use) of spec.version.base as an error by default.

Appears that no one needed fallback behavior for TestUtil.makeScratchDir w/o masterfs; deleting.

#150447: use new @ServiceProvider annotation wherever possible.

Some META-INF/services/* cleanups.
1. Some references to service implementations which no longer exist (or never existed)?
2. Typos, e.g. trailing space in class name.
3. Duplicate registrations of impl classes already registered in the right place.
4. An interface registered as an impl of itself (??).
5. DataLoader's need no longer be registered in lookup of unit tests; they should be found anyway.
6. No need to construct procedural MIMEResolver's in lookup of unit tests; declarative resolvers run anyway.
7. Some registrations in the wrong module (after impl was moved), in some cases specifying the wrong package name.
...and comments in other files which are dubious and which cannot be trivially converted to @ServiceProvider.
Some cases remain where @ServiceProvider really cannot be used:
1. Some services are being masked but nothing put in their place.
2. An impl which is not normally registered needs to be registered from another module (generally inside unit tests).

[Issue #151970] [65cat] NullPointerException at org.netbeans.modules.bpel.mapper.palette.Item$1.actionPerformed

removing unused module dependencies on deprecated editor modules

Automated merge with http://hg.netbeans.org/main/

Fix issue #140107 - Exception while assigning a wrong name to new variable

Increasing spec. versions after 6.5.