GitLab

Fix detection of static libraries, add unit test with a known
broken version.

Task-number: QTCREATORBUG-4453
Reviewed-by: con

* Detect Mips in binaries
* Parse mips gcc string properly
* Add unit tests for both

Thanks go to fralik from devnet for providing the test data!

Reviewed-by: dt

Use a distinct ABI OS flavor for each of the supported MSVC versions.

Task-number: QTCREATORBUG-4129

Reviewed-by: dt

Distinguish between binaries built using MSVC and MinGW.

Reviewed-By: Tobias Hunger

Refactor ToolChains in Qt Creator:

 * Allow for several toolchains of the same type
 * Be smarter wrt. guessing what kind of output a toolchain
   produces. This allows us to eventually handle e.g. embedded
   linux setups way better than before.
 * Be smarter wrt. guessing what kind of environment a Qt version
   needs.
 * Improve auto-detection of toolchains a bit
 * Decide on which debugger to use based on the kind of output
   produced by the compiler.
 * Add options page to configure toolchains
 * Remove toolchain related options from the Qt version dialog

Reviewed-by: dt