[gvfs] (65 commits) ...Merge branch 'mtp-backend'

[Philip Langdale <philipl src gnome org>]

Summary of changes:

  46e0f18... MTP: Initial implementation of MTP backend. (*)
  1466d52... MTP: Refactor query_info, implement do_pull. Clean up cruft (*)
  bc39468... MTP: Basic implementation of all remaining calls. (*)
  f419ec4... MTP: Improve Error handling. (*)
  b6c475c... MTP: More error handling cleanup. (*)
  6645adf... MTP: Make gphoto2 monitor skip MTP devices. (*)
  1bc4beb... MTP: Add stub gudev event handler. (*)
  19c4aa5... MTP: Add missing mutex and free calls. (*)
  9bd91bc... MTP: Restructure more error handling. (*)
  382c901... MTP: Tidy up error handling in do_push. (*)
  e660be0... MTP: Initial MTP volume monitor implementation. (*)
  41fa62a... MTP: Rework backend to work with volume monitor. (*)
  c9379c9... MTP: Implement udev event handler to exit on unplug. (*)
  fda46e8... MTP: Update .gitignore (*)
  43e7c90... MTP: Tidy up. (*)
  32726f7... MTP: Fix crash when called with no progress callback. (*)
  b06d127... MTP: Print error stack when push or pull fail. (*)
  18696cf... MTP: Add conditional configuration against libmtp. (*)
  4beb029... MTP: cleanup (*)
  4adb051... MTP: Add monitoring. (*)
  09e9f12... MTP: Put conditional test in gphoto2 monitor for libmtp. (*)
  15b21bc... MTP: Add support for downloading thumbnails. (*)
  10504d0... MTP: Clean up formatting and style for MTP Volume Monitor. (*)
  634086f... MTP: Add support for using Representative Sample of Thumbna (*)
  f0e6adb... MTP: Add configure check for LIBMTP_GetThumbnail. (*)
  4bbd0f4... MTP: Fix warnings. (*)
  2c53413... MTP: Add missing \n to some debug messages. (*)
  e25233b... MTP: Small Thumbnail clean up. (*)
  7c9e64a... MTP: Don't leak LIBMTP_file_t objects everywhere. (*)
  50a35ca... MTP: Event handling. (*)
  8efa557... MTP: Generic failed job error handling. (*)
  8f22af7... MTP: Remove unix permissions/ownership info. (*)
  b3bb26f... MTP: More clean up. (*)
  9fbb305... MTP: Finish cleaning up debug output. (*)
  f3bf026... MTP: Use fail_job everywhere its needed. (*)
  191688f... MTP: "Fix" pulling of directories. (*)
  b6d12e3... MTP: Initial review feedback. (*)
  1751084... MTP: Fix review comments. (*)
  72fe42f... MTP: Use do_make_directory to handle an attempt to upload a (*)
  2815863... MTP: Improve error messages. (*)
  e491a5d... MTP: Copy Storage type constants from ptp.h (*)
  c4405cb... MTP: More review feedback. (*)
  f1dea7b... MTP: Fix parentheses spacing. (*)
  7857a3c... MTP: Fix parentheses spacing. (*)
  bbc8ad1... MTP: Heartbeat callback to avoid connection timing out. (*)
  ec7a65a... MTP: do_query_info: Handle filename starting with digits. (*)
  4daec4f... MTP: Review feedback: Use g_vfs_job_failed_literal. (*)
  6e8ef64... MTP: Review feedback: Refactor device path derivation. (*)
  ec24997... MTP: Review feedback: Minimise event check thread race duri (*)
  e2c2480... MTP: Review feedback: Remove redundant lines. (*)
  b50c0f0... MTP: Review Feedback: Correctly handle push/pull requests f (*)
  5d51919... MTP: Review Feedback: AC_SUBST LIBMT_LIBS and LIBMTP_CFLAGS (*)
  6f66c0d... MTP: Review Feedback: Add comment to all functions where mu (*)
  fdc8f9c... MTP: Review Feedback: Use g_strv_length() (*)
  c63b132... MTP: Review Feedback: Small cleanups. (*)
  5ae18e3... MTP: Review Feedback: Remove use of static buffer. (*)
  41db12d... MTP: Review Feedback: Fix warnings. (*)
  e7b8ce4... MTP: Review Feedback: use GHashTable more efficiently. (*)
  05b63ae... MTP: Review Feedback: Unconditional chain up finalize and d (*)
  53863b5... MTP: Review Feedback: Fix memory leaks and improve memory m (*)
  ec52ff8... MTP: Fix regression in thumbnail icon handling. (*)
  f842c15... MTP: Fix segfault if client queries for non-existent file b (*)
  31bf79d... MTP: Make recursive push work. (*)
  66015d2... MTP: Fix C++ comment. (*)
  55ef4a2... Merge branch 'mtp-backend'

(*) This commit already existed in another branch; no separate mail sent