translations update (bitcoinstrings.cpp + bitcoin_en.ts)
Pass compiler flags down into leveldb make

Fixes issue#2288. Includes cleanups from Luke's pull 2243.
Minor build fixes

Two changes: make some linux-specific linker options linux and linker specific.
And in the cross-compile environment, prefer the $HOME/qt/bin tools to
whatever might be somewhere else in the path.
Merge pull request #2283 from Diapolo/translations

translations update (bitcoinstrings.cpp + bitcoin_en.ts)
remove outdated windows Qt build instructions
Merge pull request #2314 from laanwj/2013_01_remove_outdated_buildinst

remove outdated QT windows build instructions
Improve block database load error reporting
Merge branch 'loaderror' of git://github.com/sipa/bitcoin
Improve block database load error reporting
Merge pull request #2315 from sipa/loaderror

Improve block database load error reporting
Merge pull request #2311 from gavinandresen/master

Pass compiler flags to leveldb make
Set CC/CXX properly for gitian build