We must call parse_cmdline() to set the working directory before read_config_file().

Allow relative path to the client executable.
Bug fix: last item in arg list for run_program() should be NULL, not empty string.

android: bug fix, acquire wake lock when screen is off and client status changes from suspended to computing.

previous implementation tried to parse image files as soft link if they had the same prefix.

  client_release/7.2/7.2.1

Because of O(N^2) algorithms, the client becomes CPU-intensive
when there are lots of jobs.
This limit could be somewhat lower.

- If you run the client with --run_test_app,
  runs "test_app" in the current directory and interacts with it
  (and does nothing else).
  It can suspend/resume it with arbitrary timing;
  this is controlled in run_test_app() (app_start.cpp).
- example app: add --critical_section option.
  This lets you test the runtime system for apps that do
  most of their work in a critical section (like GPU apps).
- Add some logging messages (conditioned by DEBUG_BOINC_API)
  to the runtime system.
- boinc_finish() waits for the timer thread to write final messages;
  make sure it doesn't do anything else
  (like suspend the worker thread) during this period

On projects with lots of app versions and small POST size limits
(PHP or Apache config?) limit could be exceeded,
causing incorrect DB updates.
Fix this by having one Update button per app version.
Similar for apps.

client: Add the various OS compatibility shreds to the assembly manifest so we can properly detect Windows 8.1 or better.