-l option of soong_zip is used to specify the list of input files that
should be zipped. However, it only accepted newline-separated list in the
file. This prevented us from using a rspfile as paths in rspfile are
space-separated in a single line. Fixing the problem by splitting the
file content by any unicode whitespace character including newline and
space.

Test: zip_test
Change-Id: Iba572109e30c01540eacf20bd2794ba60c870fa3

Add a -srcjar argument to soong_zip that causes it to read the
package statement of each .java file and use that to place the
source file at a path that matches the package.

Test: jar_test.go, zip_test.go
Change-Id: I36017e42445ba3b0a82a10a8d81e8ac0cca096f2

It was not printing out the flag descriptions because it was using the
default FlagSet instead of the custom FlagSet when calling
PrintDefaults.

Test: soong_zip --help
Change-Id: I8a5705f8701ce0c05dde144b9a14962faa384e65

We weren't defaulting args.Stderr to os.Stderr, so we had been calling
fmt.Fprintln with `nil`.

Test: soong_zip --ignore_missing_files -C test/ -f abc -o test.zip
Change-Id: I0421f4bfb07fa36edf86c68ffc847995777c8221

soong_zip builds a list of files to zip early and then starts
zipping them all.  If a directory being zipped is concurrently
modified, a file that existed when soong_zip started may not
still exist.  Add a flag that continues when an expected file
does not exist.  Print a warning, since this should be rare
in normal usages but is a sign of a problem if it happens
regularly.

Test: zip_test.go
Test: m checkbuild
Test: m platform
Change-Id: I78426fe66fded8528ddd436c0f71a7442183cfeb

Add a --symlinks argument that defaults to true to soong_zip.
Passing --symlinks=false will cause it to follow symlinks instead
of storing them in the zip file.

Relands I4deb98daa9d4ba9f94e3d7670c117fe00381d2ba with tests.

Bug: 112843624
Test: glob_test.go
Test: zip_test.go
Test: m checkbuild
Change-Id: I0eff9c1f2dba79e873fda381ff585df55d5aaaad

-f and -D arguments can now take globs in the Soong format.

Also update the use of soong_zip that jars resources to escape the
globs in the arguments, and then shell-escape them when writing to
the rsp file so the glob escape are not intepreted by ReadRespFile.

Also remove an unused argument to the buildAAR rule that could
have contained values that needed escaping.

Relands I7f20bb169dc01f952d2a7681ec6ee9c05737ed37 with a fix for
trailing "\n" in list files, which causes a call to pathtools.Glob("")
that returns "./", which could then get incorrectly translated to
"../../../" in the zip file. Also adds tests.

Test: m checkbuild
Test: zip_test.go
Change-Id: I54b8eef9231875e6042a32c9f8bcc5c2f779922a

Add test that cover basic command line usage of soong_zip.  -D
is not covered yet as the implementation will be replaced with
one that is also more easily testable in the next patch.

Bug: 116751500
Test: zip_test.go
Change-Id: I5a1bcee74ebc9cb3cf332c36f89bc12c0e807ad2

Profiling is only used by the standalone soong_zip command,
move it out of the shared zip library.

Bug: 116751500
Test: m checkbuild
Change-Id: I443c34fb39cf8955e163a7720d6f7ed585e4172a

Add a builder that can construct []FileArg for zip.Run to use.
This will help writing tests that cover the command line parsing.

Test: later cl
Bug: 116751500
Change-Id: I15b5144f5094ab154f13de9c8a84b82db2da4e67