[ACTIVITY] WW47

[Zhenqiang Chen]

Summary:
* Upstream crosstool-ng patches.
* Create windows install package from installjammer.
* Investigate link issues.

Details:
* crosstool-ng patches.
  * Patches for newlib extra config, gdb extra config, pch, nls option
are committed to crosstool-NG upstream.
  * The dependant library patches are in discussion.

* Learn installjammer and integrate it to scripts to create windows
install package.

* Investigate warning message from link when linking the prebuilt zlib
for migw32 host.
  It might be OK with static link, but migh fail with dynamic link on windows.

  For i586-mingw32[msvc] host, lots of messages like
    libtool: link: Could not determine host path corresponding to ...

  For i386-mingw32 host: In addition to the message in i586-mingw32
build, output the following message
    *** Warning: linker path does not have real file for library -lz. ...

Plans:
* Build and test.

Absences:
* Nov 29, 30: Trainings.

Thanks!
-Zhenqiang