listimage: fix small memory leak

Free header when done with it.
Replace FindFirst() == 0 with StartsWith()

Thanks PulkoMandy.
BString docs: Add docs for StartsWith() and EndsWith()

I'm not sure why these method docs got skipped, they are
nice to know about.
Update various packages for x86_64.

Some of these are haikuwebkit dependencies, and other things haikuporter decided to rebuild for some reason.
Add search function to the API docs.

 * Uses Google site search.
 * CSS taken from the User Guide Translator's CSS.

Signed-off-by: John Scipione <jscipione@gmail.com>
Move the search text box to the right

The "API DOCUMENTATION" text placement corresponds similar text in the
User Guide.
ReaderImplBase::ReadSection(): Small simplification
PackageWriterImpl: Remove superfluous method
package kit: ReaderImplBase: Remove superfluous scratch buffer
packagefs: CachedDataReader: Don't implement ReadData()

It's already done the same way in the base class.
BDataIO: Add Flush()
Move package kit Zlib* classes to support kit

Also move to B* namespace and no longer expose the zlib dependency in
the headers.
Add B[Zlib]CompressionAlgorithm

* BCompressionAlgorithm is a base class for classes that provide
  compression/decompression functionality. There are methods for
  compressing/decompressing a single buffer and factory methods for
  a compressing/decompressing input/output BDataIO.
* BZlibCompressionAlgorithm is a BCompressionAlgorithm implementation
  using zlib.
Test program for the B[Zlib]CompressionAlgorithm functionality
Switch package kit to BZlibCompressionAlgorithm

... and remove the Zlib{Compressor,Decompressor} API.
ProcessController: style fixes to TeamBarMenuItem
ProcessController: Check if pointers are NULL
ProcessController: Fix CID 701784

Unchecked return value  (CHECKED_RETURN)

If get_team_usage_info() fails set the times to 0.

Also remove unused get_team_info() call.
Update python on x86_gcc2 to 2.6.9.

* This allows python_twisted to be installed on x86_gcc2, as it requires
  python >= 2.6.9.
Add gyp and python_setuptools packages.

Requested by Waddlesplash.