FFE: ModemManager 0.6 in Quantal

This FFE is for the upload of the release of ModemManager 0.6 in Quantal; we already have a snapshot of the 0.6 tree, but there has now been an official release.

The changes included since the last upload (I've anotated those that are not simply bugfix):

d14fb6f release: bump version to 0.6.0
d24085b release: update NEWS
c5fc283 sierra: fix CSQ handling on APP1 port
7a4bc7b sierra: allow users to help debug APP1 PPP capability *****
90e705f core: speed up QCDM probing a bit *****
94b37c4 sierra: use DHCP for the USB 305 (AT&T Lightning)
f845522 icera: allow implementors to supply custom call control commands *****
d3d98de icera: handle additional IPv4 configuration options *****
fb11f26 zte: handle Icera-based devics that use DHCP
f4cce13 gsm: if the generic CNMI request fails, try a Qualcomm-compatible one
f3a33ec sms: fix handling of 'data' property for multipart messages
cf172a9 sms: suppress warnings when reconstructing multipart messages
a682bd4 mbm: add Ericsson H5321gw (often found in Thinkpad X230) *****
9466c0a gsm: better handling of IMSI response
164da2f novatel: fix checking ERI for roaming/home decision
2bfd215 icera: be more paranoid about cleaning up connect operations
31b3c0f icera: retry configuring PDP context if it fails.
ecdb519 test: add utility to force a modem disconnect *****
4a78833 core: send State property change signals
082f683 sierra: fix detection of APP1 port
8f74fc2 core: add function to open probe ports without removing echo
6250314 sierra: fix detection of CDMA modems
6d4515c build: clean marshallers from git master
36ef5fa mbm: use +CFUN=4 for powering down
caaa9a8 qcdm: interpret MCC value from StatusSnapshot command *****
2810e99 sierra: implement band functions for Icera-based devices *****
48466e3 icera/samsung: implement supported bands *****
9dfe543 api: move SupportedBands property to Gsm.Network interface
1125f23 icera: add generic band handling functions *****
fdbab19 icera: add generic unlock retries checking *****
b6909ea huawei: limit the number of deferred tasks
181cf1e qcdm: get/set functions for hybrid preference *****
3025049 core: looser SMS message data entry regex
774fdf1 zte: add CFUN=4 power down property *****
bed0f62 zte: fix regex used when parsing allowed mode response
87cc698 longcheer: implement unlock retries checking *****
0c759d4 release: bump version to 0.5.995.0 (0.6-rc1)
0732259 release: update NEWS
4777f84 trivial: whitespace fixes
65f13f4 gsm: fix sending SMS messages on some modems and use PDU by default
3cea1b8 serial: fix AT port carriage return handling
e0246e0 hso: handle reading PIN/PUK retry counts *****
d69dbb3 decode: handle another UsbSnoop URB function *****
965b1ba gsm: ensure cleanup commands are sent when disabling
d09375e core: ignore unsupported qmi_wwan ports (rh #835153)
3270ecf gsm: emit usable reason code when disconnecting due to roaming
cae86b0 trivial: fix some build errors due to stricter warnings
73c9f36 build: update enable-more-warnings to allow yes/no/error
6705382 uml290: git-ignore generated program
9f6b6d6 huawei: ignore unsolicited ^CSNR messages
14dec9f huawei: don't set the GError if already set
08699ed huawei: avoid possible use of disposed memory
f4b5578 gsm: ensure PDU mode is set before falling back to PDU mode SMS
91e6cc9 decode: handle FUNCTION_CLASS_INTERFACE requests like CONTROL_TRANSFER
a75ed35 trivial: fix format string

Since there is at least one added test / command-line utility; I'll take this opportunity to make sure they are shipped in the package so that they are usable by users.