Support Xcode in non-standard locations.

Use xcode-select --print-path to find the currently selected Xcode.
This avoids hardcoding /Applications/Xcode.app, so that it is
possible to use Xcode from non-standard locations (I have Xcode4
and Xcode5 installed in parallel).

Note that it is not possible to have Xcode installed in a path
with a space (I used "Xcode 5" originally).  I tried to fix this
but it looks like sasl's configure and build would never manage it.
Merge pull request #83 from tipbit/non-standard-xcode-location

Support Xcode in non-standard locations.
Arm64 support
Moved min SDK up to 6 for arm64 support
Merge pull request #84 from mronge/arm64

arm64 support.
Fixed min SDK version
Removed build-nodejs since it's been moved to libetpan.node
Fixed build with Xcode 5
Fixed build for Xcode 5
build x86_64 for cyrus sasl
Fixed arch name
fix parse "UT" time zone in mailimf_zone_parse()
Merge pull request #85 from maksqwe/master

fix parse "UT" time zone in mailimf_zone_parse()
Fix crash where uninitialized password is freed.

Inside imap_mailstorage_init_sasl_with_local_address,
imap_storage->imap_password was only initialized if the password
parameter was set.  This meant that we would crash in
imap_mailstorage_uninitialize when attempting to free the
uninitialized value.
Merge pull request #87 from tipbit/uninitialized-password

Fix crash where uninitialized password is freed.
Support for searching X-GM-THRID
Create new xgm search key constructor to avoid api breakage
make new xgm method specific to xgmthrid
Merge pull request #89 from bvanosten/master

Support for searching X-GM-THRID
Renamed mailimap_search_key_xgmthrid_new -> mailimap_search_key_new_xgmthrid and removed mailimap_search_key_xgmthrid.