Try to fix LLVM 3.4/5 build

There is a new ppa with LLVM 3.4 backported to Ubuntu precise.
Renamed README to README.md and added build status from Travis.
Merge of DMD FE 2.065.0
Merge branch 'master' into merge-2.064
Merge branch 'master' into merge-2.065
Merge branch 'merge-2.064' into merge-2.065
Add files to support Linux/MIPS64.

Support is yet not complete: varargs and fiber support is missing.
Update configfile.cpp

Fix of a mistake, making it impossible to use config file in current dir.
Merge pull request #589 from yglukhov/patch-1

Update configfile.cpp
Travis: Install gcc 4.8 and clang 3.4.

This is required for LLVM 3.5.
Merge branch 'master' into merge-2.064
Add predefined version identifier for float ABI.
Dump all predefined version identifiers if logger is enabled.
Merge branch 'merge-2.064' into merge-2.065
Fix destructor calls of temporaries inside an assert.

An assert expression has a slightly different requirement: if the assertion holds then
the expression of the message is not evaluated. A destructor of a temporary variable must
not be called because the object was never constructed.
If the assertion does not hold and an exception is raised, then the destructor must be
called in a finally block.

This fixes a test failure in xtest46.d
Merge branch 'merge-2.064' into merge-2.065
Add Krait cpu for detection of ARM architecture version.
Merge branch 'master' into merge-2.064
Merge branch 'merge-2.064' into merge-2.065
Add libstdc++ to multilib build