Fix 13178 : regression for tango library inclusion

Adds supplementary warning for a change from https://github.com/D-Programming-Language/tools/pull/133
Merge pull request #134 from Dicebot/fix-13178-tango-warning

Fix 13178 : regression for tango library inclusion
print tango import warning only once
Merge pull request #136 from MartinNowak/fixup134

print tango import warning only once
Update DustMite

Commits:
* ce686c0 splitter: Improve EOF handling
* ff4f094 Add eol test (current result: DustMite crashes)
* 529a3f4 splitter: Fix words and lines splitters
* 258f68b tests: Fix lines test
* 02f9043 tests: Update words test result
* 2144de1 tests: Add c++ (dump only)
* 98bd679 tests: Add lines test
* c160f40 splitter: Add lines splitter
* 1f8c7ab tests: Add words test
* 5f03fc7 Add --split option
* d6fdb4c dustmite: Reconcile dashes in negative switches (recognize both)
* d770e2f splitter: Fix propagating noRemove during optimization
* 8d00012 Tweak noremove2 test
* ef59cea Add noremove2 test
* 2f0f2dd splitter: Wrap all of a file's entities into one
* b5ab6c4 tests: Add "empty" test
* 987eee9 dustmite: Redirect tester to nul automatically
Merge pull request #137 from CyberShadow/dustmite-20140801

Update DustMite
Replace deprecated std.process.system with std.process.executeShell
Merge pull request #138 from quickfur/dget_deprecated

Replace deprecated std.process.system with std.process.executeShell
fix Issue 13288 - rdmd --eval fails because it still imports std.metastrings
Merge pull request #139 from NilsBossung/13288

fix Issue 13288 - rdmd --eval fails because it still imports std.metastrings
rdmd <dmd flags> --eval
use latest ddox and vibe-d to fix build with 2.066.0
Merge pull request #144 from MartinNowak/fixDPLDocsBuild

use latest ddox and vibe-d to fix build with 2.066.0
use latest vibe-d alpha for dpl-docs
Merge pull request #145 from MartinNowak/fixDPLDocsBuild

use latest vibe-d alpha for dpl-docs
rdmd: Don't recompile the program if only current directory changes

Use the absolute path to the root .d file instead.

It is certainly possible that the build result will depend on
the current directory. For example, if the root file imports
other modules, these will be sought in the current directory
first. However, this is an unlikely use case, and can be
simulated using e.g. --force or -I%CD%.

On the other hand, having your script be rebuilt every time
it is run from a different directory is an unnecessary waste
of time and disk space.
Merge pull request #146 from CyberShadow/pull-20140908-130749

rdmd: Don't recompile the program if only current directory changes
Merge pull request #143 from NilsBossung/dmdflags-eval

rdmd <dmd flags> --eval
Fix warning in dustmite
Merge pull request #147 from tom-tan/fix-dustmite

Fix warnings in dustmite