Revert "Use fdatasync() to make sure modification are written"

This reverts commit 5b6821c0d0680785e8d5466c70e2debda3df3e3a.

[packaging] Revert equals to applying Mer BlueZ 4 patch bluez-fsync.patch.
[packaging] Change equivalent to Mer BlueZ 4 patch remove-duplicate-wrong-udev-rule-for-dell-mice.patch
[packaging] Apply Mer BlueZ 4 patch 0001-Adding-snowball-target-and-line-disc.patch
[packaging] Applied Mer BlueZ 4 patch allow-ofono-communication.patch with changes
[packaging] Applied Mer BlueZ 4 patch bluetoothd-service.patch with changes
[packaging] Applied Mer BlueZ 4 patch AVDTP-stream-abort-handling.patch
[packaging] Applied Mer BlueZ 4 patch bluetoothd-memleak-fixes.patch for parts not yet fixed in upstream.
[packaging] Added non-experimental binaries to tools packages
[packaging] Applicable patches from BlueZ 4. Contributes to JB#17971.
Merge pull request #1 from hmallat/mer-bluez4-patches

Mer bluez4 patches