For Qt builds, the build.h file is moved to build/build.h. For regular
builds, it is moved to obj/build.h. This allows the Qt build to be done
in a different directory than the source, and without interfering with
other builds.

Build identification strings

Show error message instead of exception crash when unable to bind RPC port

All client version information is moved to version.cpp, which optionally
(-DHAVE_BUILD_INFO) includes build.h. build.h is automatically generated
on supporting platforms via contrib/genbuild.sh, using git describe.

The git export-subst attribute is used to put the commit id statically
in version.cpp inside generated archives, and this value is used if no
build.h is present.

The gitian descriptors are modified to use git archive instead of a
copy, to create the src/ directory in the output. This way,
src/src/version.cpp will contain the static commit id. To prevent
gitian builds from getting the "-dirty" marker in their git-describe
generated identifiers, no touching of files or running sed on the
makefile is performed anymore. This does not seem to influence
determinism.

Trivial: added comment lines in French & Turkish

Use scoped locks instead of CRITICAL_BLOCK

Cleanup: Replace "URL" with "URI" where we aren't actually working with URLs

Fixes issue #875

Condition variables instead of polling

Change sign message bitcoin address tooltip to "The address to sign the ...

Document strlcpy.h in assets-attribution.txt since it isn't MIT-licensed

Flush on log size instead of transaction count

removed obsolete boost workaround (boost ticket #4258)

Remove USE_SSL #define

Enable addmultisigaddress RPC call for main network

Remove half-implemented publish/subscribe system

Add ifdef RELEASE to makefile.osx as the compile-for-older-macs flags

Fix #955: Verify status of encrypt/decrypt calls to detect failed padding

small misc syntactic fixes