Split directory_posix -> directory_(android|linux|macos)
This allows us to cleanly make Android-specific changes to
directory_android.cc
Copy all _linux files to _android files and edit as needed to account
for the differences between Linux and Android:
+ getcwd(0, NULL) doesn't work on Android, have to emulate
+ Android doesn't have a '/tmp' directory, have to emulate
+ Android doesn't provide mkdtemp(), have to emulate.
+ Small differences in the available system include files.
+ Use pthread_cond_timedwait_monotonic instead of
pthread_condattr_setclock
Review URL: https://chromiumcodereview.appspot.com//10826233
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10613 260f80e4-7a28-3924-810f-c04153c831b5
Next steps: Testing, Windows support and using isolates to make
listing async.
We should probably change the API to not tie a Directory object
to a given OS directory structure. When spawning an isolate to
perform a listing operation, that will open the directory,
list its contents and close the directory. That way we can
do multiple listing operations with the same Directory object
without having interference.
R=sgjesse@google.com,iposva@google.com
BUG=
TEST=
Review URL: https://chromereviews.googleplex.com/3511020
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@43 260f80e4-7a28-3924-810f-c04153c831b5
whesse@google.com