Fixed error reporting when build fails.
Modified to handle 64-bit versions of NDK r8e
Fixes undefined references when using Boost.Filesystem.

Currently only in 1.49 version of boost.
Removed patch to bootstrap.log from boost-1_48_0.patch.
Merge branch 'master' of https://github.com/readium/Boost-for-Android
HOST_* variables are now logged.

The are: HOST_ARCH, HOST_OS, HOST_EXE, HOST_TAG and HOST_NUM_CPUS.
Had to pospone finding of there variables after the name of the
log file was determined.
Corrected the Platform variable for cygwin and windows.

Should be just 'windows' not 'windows-$HOST_ARCH'
Adds more tests and debug output to the script.
Reverting to 18092dda (~8 commits)

Last few commits contained some usefull code but
some debug code as well. I've cherry picked those
useful commits to the main repo, so it's no biggie.
Merge branch 'master' of https://github.com/MysticTreeGames/Boost-for-Android
Merge branch 'devel'
Fixes undefined reference from boost::filesystem

To std::locale.
Fixes undefined reference from boost::filesystem (1.53)

To std::locale.
Add support for building boost using ndk provided in Android sources
Fixes undefined reference from boost::filesystem (1.53)

To std::locale.
Fixes undefined reference from boost::filesystem

To std::locale.
Merge branch 'mystic-master'
Merge branch 'mystic-master' into devel
Merge branch 'master' of https://github.com/ArnaudD-FR/Boost-for-Android into ArnaudD-FR-master
Make path to the NDK root absolute before passing it to bjam