base: added national roamning

http://jira.omnirom.org/browse/OMNI-869

Users of MCC 272 MNC 11 can roam on MNC 02

Change-Id: I70dd2efe7e3bd11e3e33ff40f66bf75a0b586aa5
[1/2] Base: DownloadManager: add support pause/resume/stop notifications

Add pause, resume and stop functions to make user can pause, resume and stop downloads by manual in downloads application.

Change-Id: I82ffff5a539448faab8933e2b47591199bf24cb9
Fix HTC headset handling.

HTC's headset driver adds additional bits to the switch state, which
we're unable to deal with. Fix that by masking out those bits and
keeping only the valid ones.

Based off: https://gerrit.omnirom.org/#/c/5500/

Original author retained :)

Change-Id: I1abca665488e89f76eae97c4aab86bd51afd2a19
Fixup pin-layout on sw320dp-hdpi and sw320dp devices

Based on: http://review.cyanogenmod.org/#/c/57557/

Note: Though this commit seems to have been already picked here: https://github.com/omnirom/android_frameworks_base/commit/b3904d3255f3ec620f317d7d39b195dcda77c9ba
I don't think it was fully picked :|

Change-Id: I13893069102b82ae74169b51863ccf76b863a380
Merge pull request #5 from omnirom/android-4.4

sync